KS3 Science Keywords

Question	Answer
Movement	When organisims move in order to survive.
Reproduction	Organisms producing offspring
Sensitivity	Organisms respond and reacy.
Nutrition	When organisms eat in order to survive.
Excretion	Organisms getting rid of waste.
Respiration	When organisms react with oxygen in order to survive (For energy)
Growth	When organisms grow .
Tissue	Lots of similar cells working together.
Brain	This controls the rest of the body
Heart	This pumps blood around the body.
Leaf	This is the main organ of photosynthesis.
Stomach	This helps digest food.
Flower	This organ makes seeds into a plant.
Nucleus	Controls what the cell does.
Cytoplasm	Large space where chemical reactions occur.
Cell wall	Covers the cell membrane and provides strength for the plant cell.
Chlorophlast	Absorbs light energy to make food for the plant
Vacoule	Stores water in a plant cell.
Ciliated Cell	Its surface is covered in tiny hairs called cilia, these brush up dirt and germs up.
Palisade Cell	Contains green discs called chloroplast, absorb light to make food.
Sperm Cell	Uses tail to swim, head contains nucleus which enter ovum during fertilization.
Root Hair Cell	Absorb water from soil, with a large surface area.
Seven Food Main Chemicals	Carbohydrate Protein Fat Vitamins Minerals Fibre
Carbohydrate	Provides energy very fast unlike fats.
Protein	For growth, health and repair.
Fats	For insulation and to provide long term energy.
Vitamins/Minerals	Needed in small amounts to keep the body healthy.
Fibre	For a healthy digestive system and allows nutritients to smoothly digest.
Stages of digestion	Food is digested in the mouth, stomach and small intestine
2nd Stage of Digestion	Digested food is absorbed into the bloodstream in the small intestine
3rd Stage of Digestion	Excess water is absorbed back into the body in the large intestine.
Last Stage of Digestion	Any undigested food passes out of the anus as faeces when we go to the toilet.
Plasma	It carries: waste carbon dioxide from cells to lungs, dissolved food to cells waste urea, hormones.
Red Cells	No nucleus and carry oxygen from lungs to the cells.
White Blood Cells	No nucleus and fights against germ which enter blood.
Platelets	Small pieces of cells, no nucleus, help blood clot.
Blood Vessels	Carry blood around body in tube called...
Three Types of Blood Vessels	Arteries, veins and capillaries.
Veins	Carry blood back to the heart.
Cappilaries	Thin cell walls, useful chemicals to body and remove waste chemicals away from blood cells.
Joints	Allow movement around the body.
Contract (Short)	Muscles ...... in order to pull.
Antagonistic pairs	A pair of muscles which work against each other top provide movement.
Male Symptoms during puberty	Produce sperms, release hormone called testosterone, voice becomes deeper, hair grows on face and body, body becomes more muscular, change in attitude and behavior.
Females Symptoms During Puberty	Ovaries start to release ova, hormone called oestrogen, monthly menstrual cycle starts, hair grows on parts of body, hips widen, breasts develop.
Embryo	When a baby starts growing in the uterus.
Foetus	When foetus reaches to 9 weeks old.
Placenta	Special organ which is in the wall of uterus, Provides food and oxygen.
Placenta	Special organ which is in the wall of uterus, Provides food and oxygen.
Umbilical Cord	Removes waste substances for example: urea, carbondioxide and waste chemicals.
Blood Carrying Waste	Enters lungs and flows around alveolis.
Inhaling (Breathing in)	increase volume, decrease in pressure,muscles contract to pulll ribcage outwards.
Exhaling (Breathing out)	Decrease in volume, oincrease in pressure, muscles relax which pull ribcage inwards.
Smoking	Damages ciliated hair cells and cilia muscles therefore pathogens can enter in to lungs.
Bronchiatis	A chest infection and a nasty cough.
Respiration Equation	Oxygen + Glucose = Carbondioide + Water.
Alcohol	Slows speed reactions, cause damage to heart, liver and brain.
Tobacco	Poisonous, addictive and causes cancer, bronchitis,lung damage and heart disease.
Cannabis	Causes halluncinations (Seeing things when they arent there), confused and cause fatal accidents.
Solvents	Dizziness, halluncinations and damage to the heart.
Microbes	Are germs which live in our bodies.
Microbes	Are germs which live in our bodies.
Types of Germs	Bactiera and virus.
Bactiera	Harm us by attacking our cells and producing poisonous waste chemicals.
Bactiera	Harm us by attacking our cells and producing poisonous waste chemicals.
Viruses	Are much smalller than bactiera,injects DNA instructions into a cell which makes Cell to produce more virus cells.
A Typical Bacterium	Some have slimy coating, simple nucleus, cell wall/membrane, Cytoplasm.
Virus	Outer coat, feets attacjed to a cell, DNA injected into cells.
Phagocyte	Bactiera are taken in and digested.
Lymphocyte	Produce chemicals called anti-bodies.
Photosynthesis	When plants make their own food by absorbing light in order to make plants energy.
Glucose	When water and oxygen join molecules to form energy.
Chlorophlasts	Is tiny discs in leaf cells which form leaves.
Chlorophyll	Is a green chemical which is in chlorphlasts.
Root Hair Cells	Absorb: Nitrogen, phosphorus and magnesium.
Nitrogen	To make proteins for growth.
Magneisium	A green chemical chlorophyll for photosynthesis to occur.
Phosphorus	For good root growth.
Fungi	No green chemical, dont make their own food and feed on dead matieral.
Algae	Live in water, no roots or leaves and make their own food.
Mosses and Liverworts	Small simple roots and leaves, grow in damp places.
Ferns	Have well developed roots, grow in damp and reproduce spores.
Conifers	Trees with tough needle shaped leaves and no flowers.
Pollination	Pollen grains carried from one flower to another by insects or wind.
Pollination	Pollen grains carried from one flower to another by insects or wind.
Fertilisation	When the sex cells join together.
Buttercup	Insect pollinated, flowers are colourful and well scented.
Grass Flowers	Wind pollinated, flowers are light and feathery to catch breeze.
Fruit Types	Sycamore, Burdock and blackberries.
Sycamore	Have wings and are dispersed by wind.
Burdock	Have hooks to catch animal fur.
Blackberries	Juicy and seed do not digest.
Inverterbrates	Animals without a back bone.
Verterbrates	Animals with a back bone.
Jellyfish and Anemones	Live in sea, simple body with tentacles.
Flatworms	Long flat body, some live in fresh water and some live inside other animals.
Segemented Worms	Long body divided in ring of sediment.
Mollucus	Have a shell,most live in water and have tentacles.
Starfish and Sea Urichins	All live in sea, thick skin which maybe covered in spines.
Centipedes amd Millipedes	Long bodies, one pair of legs millipedes have two.
Fish	Live in water, have gills and covered with scales.
Amphibians	Live in water with gills and adult lives on land with lungs.
Reptiles	Dry, scaly waterproof skin, eggs have tough shelland are laid on land.
Birds	Covered in feathers, wings for flying, eggs have hard shell and have beak for feeding.
Mammals	Have hair, warm body, young develop inside mothers body and young feed on milk.
Variation	Small differences which no two humans are exactly alike.
Continuous Variation	When a feature shows many different types eg: height.
Discontinous Variationm	When a feature only shows a few different types.
Genes	Are types of DNA which control variation.
Environment	Surroundings that individuals live in.
Genetic	Is when the ovum and the sperm fuse together to give as mixture of their features.
Envoiriment	Food supply affects the growth rate and climate effects how animals and plants develop.
Chronosomes	Hold the genes that control a person`s features in how they develop.
Selective Breeding	This means picking out particular features of organisms then breed both animals together in order to pass on the generation.
Evolution	When animals and plants slowly change over million of years.
Natural Selection	Is when nature is selecting which ones survive and breed.
Adaptations	All special features which will help them in order to survive.
Habitat	Is where a plant or animal lives.
Environmental Conditions	Is required things in order to survive for example: Temperature, Light, Water and Oxygen.
Nocturnal	When an animal is only active at night because it`s more cooler.
Hibernate	When animals go into a very deep sleep.
Migrate	When animals go to another country to gain a better lifestyle during the winter.
Photosynthesis	A process which allows green plants to absorb sunlight in order to survive.
Food Chain	When food energy is passed along the food chain which allows animals to survive.
Herbivores	Are animals which eat plants.
Carnivores/Predator	When animal goes and hunt animal in order to survive.
Prey	Is the victim which has been eaten by the predator.
Pyramid of Numbers	Are usually large at the bottom and the smallest amount at the top.
Food Webs	Are lots of animals connected together to give an idea of whats being eaten.
Pesticides	When farmers spray their cops with this chemical in order to prevents the pests, insects and weeds.
Biological Control	When controlling pests by using their natural enemies.
Three Types of Matter	Solid, Liquids and Gases.
Solids	Particle in pattern, Strong forces, compressed easily and high density.
Liquids	Particles can flow, held close together and are dense.
Gases	Weak forces, Particles move around, medium density and cannot be compressed.
Solid Example	Ice because it is a sold when freezed.
Liquid Example	Is water because from a solid to a liquid the substance must be heated.
Gases Example	Is steam when liquid is heated to form a gas.
Pressure	When particles bump against the walls.
Diffuse	When gases spread out from a lower concentration to a lower concentration.
Atom	An element which cannot be broken down into anything simpler.
Nucleus	Is in the center of atom consisting with many electrons
Outer Shell	Has four electrons altogether.
Inner shell	Consist of two electrons altogether.
Nucleus	Consist of six neutrons and six protons.
Proton	Positively charged.
Nuetron	Neutral charge (No charge).
Electron	Negatively charged.
Atomic Number	Is the number of protons that an atom contains.
Periodic Table	All of the elements are arranged in this particular table.
Periods	Seven rows of elements.
Compounds	When elements join together by chemical reaction to form a compound.
Coal Burning	Carbon + Oxygen => Carbon dioxide + Heat
Hydrogen Exploding	Hydrogen + Oxygen = Water + Heat
Making Salt	Sodium + Chlorine = Sodium Chloride.
Filtration	Separating small, solid Particles from liquids, using filter paper and a funnel.
Distilation	This method separates dissolved chemicals from liquids which are dissolved in solvents.Water evaporates from boiling tube leaving substance behind.
Chromatography	When ink is being separated ,as water rises up it takes colors up with it leaving different shades of colors.
Different Separating Methods	Filtration, distillation and chromatography.
Metals	Shiny at room temp, solid apart from Mercury at room temp liquid, shiny and good heat electricity conductors, some magnetic.
Non Metals	Low melting point Gases at room temp, Poor conductors of heat and electricity, Exception to Graphite because it consist of carbon, Non-Magentic
Solouble	When a solid dissolves in a liquid.
Solute	The substance which is being dissolved.
Solvent	The liquid that the solute dissolves in.
Solvent	Is the whole overall solution.
Saturated	When non more will dissolve because it is full.
Expansion	Happens when particles gain more energy and vibrate more.
Weathering	when rocks slowly break up by the weather.
Types of Weathering	Rain, wind, expansion and contraction, and freeze-thaw.
Rock Cycle	Need a picture.
Igneous rocks	when molten magma cools down, tiny crystals and very hard.
Sedimentary Rocks	Formed of layers of sediment, grainy structure, crumble quickly and layers of rock are called strata.
Metamorphic rocks	Igneous and Sedimentary rocks pressured to form metamorphic rocks.
Elements	Simple substances.
Products	Chemicals which are made after reaction.
Compound	When chemicals chemically formed together to form a substance.
reactants	Starting chemicals.
Decomposition	When substances break down into smaller substances.
Synthesis	Two or more substances join together to make as new single substance.
Oxidation	When during the chemical reaction reacts with oxygen which forms heat and light.
Two main raw matierals	Metal ores and crude oil.
Ores	Must react with other chemicals to extract the metals they contain.
Haemtite	Consist of iron ores which consist of iron oxide.
Crude Oil	Is an type of oil which is natural from the ground.
Rusting	Is when a metal reacts with oxygen therefore it goes rusty.
Burning Fuels	Fuel + Oxygen => Carbon dioxide + Water.
Greenhouse Effect	Burning fuels which consist of carbon dioxide which leads to a higher risk of global warming and climate change.
Acid Rain	When oil and coal release sulfur dioxide which then makes the rain go more acidic.
Displacement Reactions	When a metal is more reactive than the other metal so it displaces the other metal.
Corrosive	Are substances which are poisonous and can possibly kill you.
Nuetral	Is part of a PH scale which is between the acids and alkali.
Strong acids	Hydrochloric acid and sulfuric acid.
Weak acid	Ethanoic acid (in vinegar)
Strong Alkali	Sodium hydroxide, oven cleaner and washing powder.
Weak Alkali	Soap and sodium bicarbonate.
Universal Indicator	Indicates whether the substance is an acid, alkali or neutral using colors.
Acid & Metals	Acid + Metal => Hydrogen + Salt.
Acid & Bases	Acid + Base => Salt + Water.
Acid & Carbonate	Acid + Carbonate => Carbon dioxide + Water.
Base	Is a chemical which neutrilise acids.
Acid Indigestion	When stomach produces or intakes too much acid.
Insect Stings	Wasp sting & Bee sting.
Wasp Sting	Is alkali therefore treat it with vinegar (weak acid).
Bee Sting	Acidic so treat it with an alkali E.g. Sodium bicarbonate (Baking powder).
Conductors	Are metals which conduct heat and electricity.
Insulators	Are non-metals which are poor conductors of heat and electricity.
Resistors	Are length of wires which reduce current in the circuit.
Magnetic Field	Are invisible magnetic forces around a magnet.
Attracton	When north and south poles attract to each other.
Solenoid	When the magnetic field is wrapped around a coil of wire.
Speed	Distance ------------ Time
Distance	Speed times by Time.
Force	Is an push or pull which is measured in Newtons (N).
Unbalanced forces	Will change shape or direction.
Friction	Is a force which stops two surfaces sliding past each other.
Pivot	Is the rotation or turning point.
Turning Force	Can be increased by increasing length of lever.
Pressure	Force -------- Area
Force	Pressure times by Area.
Luminous	Are objects which make their own light.
Reflection	When we see opposite objects due to light bouncing off them.
Reflected Rays	Leave the surface of the mirror at the same angle they came at.
Incident Rays	Are rays which hit the mirror.
Medium	Any material which light can travel through.
Refraction	Is when light travels from one medium to another.
Prisim	Is a triangular glass block, if light is passed through ..... it is refracted.
Spectrum	A variety of different types of colors.
ROY G BIV	Red, Orange, Yellow, Green, Blue, Indigo and Violet.
Ear Bones	Carry vibrations to cochlea.
Semi-Circular Canals	This gives senses of balance of body and ear.
Audioutery nerve	Carries nerve impulses from brain to the cells.
Ear Drum	Vibrates when sound waves vibrate.
Hearing Range	Is the range of a person can hear.
Sound waves	Are caused by vibrating objects.
Amplitude	Is the height of the waves.
Frequency	Is number of waves per second.
Pitch	Is how loud the sound is.
Vaccumn	Is a object where sound cannot travel through.
Axis	Is the imaginary line that runs from the north pole to the sound pole.
Seasons of The Year	Autumn, Spring, Summer and Winter.
Solar System Planets	Mercury, Venus, Earth, Mars, Jupiter, Uranus, Neptune and Pluto.
Plants Remembrance	My Very Easy Method Just Speeds Up Naming Planets.
Gravity	Is a force which attracts the planets to the sun.
Satellite	Is any object which travels around a planet.
Natural Satellite	A satellite that humans have or did not create.
Artificial Satellite	Is a satellite which was created by humans for weather reports, signal and many more things.

Movement

When organisims move in order to survive.

Reproduction

Organisms producing offspring

Sensitivity

Organisms respond and reacy.

Nutrition

When organisms eat in order to survive.

Excretion

Organisms getting rid of waste.

Respiration

When organisms react with oxygen in order to survive (For energy)

Growth

When organisms grow .

Tissue

Lots of similar cells working together.

Brain

This controls the rest of the body

Heart

This pumps blood around the body.

Leaf

This is the main organ of photosynthesis.

Stomach

This helps digest food.

Flower

This organ makes seeds into a plant.

Nucleus

Controls what the cell does.

Cytoplasm

Large space where chemical reactions occur.

Cell wall

Covers the cell membrane and provides strength for the plant cell.

Chlorophlast

Absorbs light energy to make food for the plant

Vacoule

Stores water in a plant cell.

Ciliated Cell

Its surface is covered in tiny hairs called cilia, these brush up dirt and germs up.

Palisade Cell

Contains green discs called chloroplast, absorb light to make food.

Sperm Cell

Uses tail to swim, head contains nucleus which enter ovum during fertilization.

Root Hair Cell

Absorb water from soil, with a large surface area.

Seven Food Main Chemicals

Carbohydrate Protein Fat Vitamins Minerals Fibre

Carbohydrate

Provides energy very fast unlike fats.

Protein

For growth, health and repair.

Fats

For insulation and to provide long term energy.

Vitamins/Minerals

Needed in small amounts to keep the body healthy.

Fibre

For a healthy digestive system and allows nutritients to smoothly digest.

Stages of digestion

Food is digested in the mouth, stomach and small intestine

2nd Stage of Digestion

Digested food is absorbed into the bloodstream in the small intestine

3rd Stage of Digestion

Excess water is absorbed back into the body in the large intestine.

Last Stage of Digestion

Any undigested food passes out of the anus as faeces when we go to the toilet.

Plasma

It carries: waste carbon dioxide from cells to lungs, dissolved food to cells waste urea, hormones.

Red Cells

No nucleus and carry oxygen from lungs to the cells.

White Blood Cells

No nucleus and fights against germ which enter blood.

Platelets

Small pieces of cells, no nucleus, help blood clot.

Blood Vessels

Carry blood around body in tube called...

Three Types of Blood Vessels

Arteries, veins and capillaries.

Veins

Carry blood back to the heart.

Cappilaries

Thin cell walls, useful chemicals to body and remove waste chemicals away from blood cells.

Joints

Allow movement around the body.

Contract (Short)

Muscles ...... in order to pull.

Antagonistic pairs

A pair of muscles which work against each other top provide movement.

Male Symptoms during puberty

Produce sperms, release hormone called testosterone, voice becomes deeper, hair grows on face and body, body becomes more muscular, change in attitude and behavior.

Females Symptoms During Puberty

Ovaries start to release ova, hormone called oestrogen, monthly menstrual cycle starts, hair grows on parts of body, hips widen, breasts develop.

Embryo

When a baby starts growing in the uterus.

Foetus

When foetus reaches to 9 weeks old.

Placenta

Special organ which is in the wall of uterus, Provides food and oxygen.

Placenta

Special organ which is in the wall of uterus, Provides food and oxygen.

Umbilical Cord

Removes waste substances for example: urea, carbondioxide and waste chemicals.

Blood Carrying Waste

Enters lungs and flows around alveolis.

Inhaling (Breathing in)

increase volume, decrease in pressure,muscles contract to pulll ribcage outwards.

Exhaling (Breathing out)

Decrease in volume, oincrease in pressure, muscles relax which pull ribcage inwards.

Smoking

Damages ciliated hair cells and cilia muscles therefore pathogens can enter in to lungs.

Bronchiatis

A chest infection and a nasty cough.

Respiration Equation

Oxygen + Glucose = Carbondioide + Water.

Alcohol

Slows speed reactions, cause damage to heart, liver and brain.

Tobacco

Poisonous, addictive and causes cancer, bronchitis,lung damage and heart disease.

Cannabis

Causes halluncinations (Seeing things when they arent there), confused and cause fatal accidents.

Solvents

Dizziness, halluncinations and damage to the heart.

Microbes

Are germs which live in our bodies.

Microbes

Are germs which live in our bodies.

Types of Germs

Bactiera and virus.

Bactiera

Harm us by attacking our cells and producing poisonous waste chemicals.

Bactiera

Harm us by attacking our cells and producing poisonous waste chemicals.

Viruses

Are much smalller than bactiera,injects DNA instructions into a cell which makes Cell to produce more virus cells.

A Typical Bacterium

Some have slimy coating, simple nucleus, cell wall/membrane, Cytoplasm.

Virus

Outer coat, feets attacjed to a cell, DNA injected into cells.

Phagocyte

Bactiera are taken in and digested.

Lymphocyte

Produce chemicals called anti-bodies.

Photosynthesis

When plants make their own food by absorbing light in order to make plants energy.

Glucose

When water and oxygen join molecules to form energy.

Chlorophlasts

Is tiny discs in leaf cells which form leaves.

Chlorophyll

Is a green chemical which is in chlorphlasts.

Root Hair Cells

Absorb: Nitrogen, phosphorus and magnesium.

Nitrogen

To make proteins for growth.

Magneisium

A green chemical chlorophyll for photosynthesis to occur.

Phosphorus

For good root growth.

Fungi

No green chemical, dont make their own food and feed on dead matieral.

Algae

Live in water, no roots or leaves and make their own food.

Mosses and Liverworts

Small simple roots and leaves, grow in damp places.

Ferns

Have well developed roots, grow in damp and reproduce spores.

Conifers

Trees with tough needle shaped leaves and no flowers.

Pollination

Pollen grains carried from one flower to another by insects or wind.

Pollination

Pollen grains carried from one flower to another by insects or wind.

Fertilisation

When the sex cells join together.

Buttercup

Insect pollinated, flowers are colourful and well scented.

Grass Flowers

Wind pollinated, flowers are light and feathery to catch breeze.

Fruit Types

Sycamore, Burdock and blackberries.

Sycamore

Have wings and are dispersed by wind.

Burdock

Have hooks to catch animal fur.

Blackberries

Juicy and seed do not digest.

Inverterbrates

Animals without a back bone.

Verterbrates

Animals with a back bone.

Jellyfish and Anemones

Live in sea, simple body with tentacles.

Flatworms

Long flat body, some live in fresh water and some live inside other animals.

Segemented Worms

Long body divided in ring of sediment.

Mollucus

Have a shell,most live in water and have tentacles.

Starfish and Sea Urichins

All live in sea, thick skin which maybe covered in spines.

Centipedes amd Millipedes

Long bodies, one pair of legs millipedes have two.

Fish

Live in water, have gills and covered with scales.

Amphibians

Live in water with gills and adult lives on land with lungs.

Reptiles

Dry, scaly waterproof skin, eggs have tough shelland are laid on land.

Birds

Covered in feathers, wings for flying, eggs have hard shell and have beak for feeding.

Mammals

Have hair, warm body, young develop inside mothers body and young feed on milk.

Variation

Small differences which no two humans are exactly alike.

Continuous Variation

When a feature shows many different types eg: height.

Discontinous Variationm

When a feature only shows a few different types.

Genes

Are types of DNA which control variation.

Environment

Surroundings that individuals live in.

Genetic

Is when the ovum and the sperm fuse together to give as mixture of their features.

Envoiriment

Food supply affects the growth rate and climate effects how animals and plants develop.

Chronosomes

Hold the genes that control a person`s features in how they develop.

Selective Breeding

This means picking out particular features of organisms then breed both animals together in order to pass on the generation.

Evolution

When animals and plants slowly change over million of years.

Natural Selection

Is when nature is selecting which ones survive and breed.

Adaptations

All special features which will help them in order to survive.

Habitat

Is where a plant or animal lives.

Environmental Conditions

Is required things in order to survive for example: Temperature, Light, Water and Oxygen.

Nocturnal

When an animal is only active at night because it`s more cooler.

Hibernate

When animals go into a very deep sleep.

Migrate

When animals go to another country to gain a better lifestyle during the winter.

Photosynthesis

A process which allows green plants to absorb sunlight in order to survive.

Food Chain

When food energy is passed along the food chain which allows animals to survive.

Herbivores

Are animals which eat plants.

Carnivores/Predator

When animal goes and hunt animal in order to survive.

Prey

Is the victim which has been eaten by the predator.

Pyramid of Numbers

Are usually large at the bottom and the smallest amount at the top.

Food Webs

Are lots of animals connected together to give an idea of whats being eaten.

Pesticides

When farmers spray their cops with this chemical in order to prevents the pests, insects and weeds.

Biological Control

When controlling pests by using their natural enemies.

Three Types of Matter

Solid, Liquids and Gases.

Solids

Particle in pattern, Strong forces, compressed easily and high density.

Liquids

Particles can flow, held close together and are dense.

Gases

Weak forces, Particles move around, medium density and cannot be compressed.

Solid Example

Ice because it is a sold when freezed.

Liquid Example

Is water because from a solid to a liquid the substance must be heated.

Gases Example

Is steam when liquid is heated to form a gas.

Pressure

When particles bump against the walls.

Diffuse

When gases spread out from a lower concentration to a lower concentration.

Atom

An element which cannot be broken down into anything simpler.

Nucleus

Is in the center of atom consisting with many electrons

Outer Shell

Has four electrons altogether.

Inner shell

Consist of two electrons altogether.

Nucleus

Consist of six neutrons and six protons.

Proton

Positively charged.

Nuetron

Neutral charge (No charge).

Electron

Negatively charged.

Atomic Number

Is the number of protons that an atom contains.

Periodic Table

All of the elements are arranged in this particular table.

Periods

Seven rows of elements.

Compounds

When elements join together by chemical reaction to form a compound.

Coal Burning

Carbon + Oxygen => Carbon dioxide + Heat

Hydrogen Exploding

Hydrogen + Oxygen = Water + Heat

Making Salt

Sodium + Chlorine = Sodium Chloride.

Filtration

Separating small, solid Particles from liquids, using filter paper and a funnel.

Distilation

This method separates dissolved chemicals from liquids which are dissolved in solvents.Water evaporates from boiling tube leaving substance behind.

Chromatography

When ink is being separated ,as water rises up it takes colors up with it leaving different shades of colors.

Different Separating Methods

Filtration, distillation and chromatography.

Metals

Shiny at room temp, solid apart from Mercury at room temp liquid, shiny and good heat electricity conductors, some magnetic.

Non Metals

Low melting point Gases at room temp, Poor conductors of heat and electricity, Exception to Graphite because it consist of carbon, Non-Magentic

Solouble

When a solid dissolves in a liquid.

Solute

The substance which is being dissolved.

Solvent

The liquid that the solute dissolves in.

Solvent

Is the whole overall solution.

Saturated

When non more will dissolve because it is full.

Expansion

Happens when particles gain more energy and vibrate more.

Weathering

when rocks slowly break up by the weather.

Types of Weathering

Rain, wind, expansion and contraction, and freeze-thaw.

Rock Cycle

Need a picture.

Igneous rocks

when molten magma cools down, tiny crystals and very hard.

Sedimentary Rocks

Formed of layers of sediment, grainy structure, crumble quickly and layers of rock are called strata.

Metamorphic rocks

Igneous and Sedimentary rocks pressured to form metamorphic rocks.

Elements

Simple substances.

Products

Chemicals which are made after reaction.

Compound

When chemicals chemically formed together to form a substance.

reactants

Starting chemicals.

Decomposition

When substances break down into smaller substances.

Synthesis

Two or more substances join together to make as new single substance.

Oxidation

When during the chemical reaction reacts with oxygen which forms heat and light.

Two main raw matierals

Metal ores and crude oil.

Ores

Must react with other chemicals to extract the metals they contain.

Haemtite

Consist of iron ores which consist of iron oxide.

Crude Oil

Is an type of oil which is natural from the ground.

Rusting

Is when a metal reacts with oxygen therefore it goes rusty.

Burning Fuels

Fuel + Oxygen => Carbon dioxide + Water.

Greenhouse Effect

Burning fuels which consist of carbon dioxide which leads to a higher risk of global warming and climate change.

Acid Rain

When oil and coal release sulfur dioxide which then makes the rain go more acidic.

Displacement Reactions

When a metal is more reactive than the other metal so it displaces the other metal.

Corrosive

Are substances which are poisonous and can possibly kill you.

Nuetral

Is part of a PH scale which is between the acids and alkali.

Strong acids

Hydrochloric acid and sulfuric acid.

Weak acid

Ethanoic acid (in vinegar)

Strong Alkali

Sodium hydroxide, oven cleaner and washing powder.

Weak Alkali

Soap and sodium bicarbonate.

Universal Indicator

Indicates whether the substance is an acid, alkali or neutral using colors.

Acid & Metals

Acid + Metal => Hydrogen + Salt.

Acid & Bases

Acid + Base => Salt + Water.

Acid & Carbonate

Acid + Carbonate => Carbon dioxide + Water.

Base

Is a chemical which neutrilise acids.

Acid Indigestion

When stomach produces or intakes too much acid.

Insect Stings

Wasp sting & Bee sting.

Wasp Sting

Is alkali therefore treat it with vinegar (weak acid).

Bee Sting

Acidic so treat it with an alkali E.g. Sodium bicarbonate (Baking powder).

Conductors

Are metals which conduct heat and electricity.

Insulators

Are non-metals which are poor conductors of heat and electricity.

Resistors

Are length of wires which reduce current in the circuit.

Magnetic Field

Are invisible magnetic forces around a magnet.

Attracton

When north and south poles attract to each other.

Solenoid

When the magnetic field is wrapped around a coil of wire.

Speed

Distance ------------ Time

Distance

Speed times by Time.

Force

Is an push or pull which is measured in Newtons (N).

Unbalanced forces

Will change shape or direction.

Friction

Is a force which stops two surfaces sliding past each other.

Pivot

Is the rotation or turning point.

Turning Force

Can be increased by increasing length of lever.

Pressure

Force -------- Area

Force

Pressure times by Area.

Luminous

Are objects which make their own light.

Reflection

When we see opposite objects due to light bouncing off them.

Reflected Rays

Leave the surface of the mirror at the same angle they came at.

Incident Rays

Are rays which hit the mirror.

Medium

Any material which light can travel through.

Refraction

Is when light travels from one medium to another.

Prisim

Is a triangular glass block, if light is passed through ..... it is refracted.

Spectrum

A variety of different types of colors.

ROY G BIV

Red, Orange, Yellow, Green, Blue, Indigo and Violet.

Ear Bones

Carry vibrations to cochlea.

Semi-Circular Canals

This gives senses of balance of body and ear.

Audioutery nerve

Carries nerve impulses from brain to the cells.

Ear Drum

Vibrates when sound waves vibrate.

Hearing Range

Is the range of a person can hear.

Sound waves

Are caused by vibrating objects.

Amplitude

Is the height of the waves.

Frequency

Is number of waves per second.

Pitch

Is how loud the sound is.

Vaccumn

Is a object where sound cannot travel through.

Axis

Is the imaginary line that runs from the north pole to the sound pole.

Seasons of The Year

Autumn, Spring, Summer and Winter.

Solar System Planets

Mercury, Venus, Earth, Mars, Jupiter, Uranus, Neptune and Pluto.

Plants Remembrance

My Very Easy Method Just Speeds Up Naming Planets.

Gravity

Is a force which attracts the planets to the sun.

Satellite

Is any object which travels around a planet.

Natural Satellite

A satellite that humans have or did not create.

Artificial Satellite

Is a satellite which was created by humans for weather reports, signal and many more things.

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KS3 Science Keywords

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	Created by luqman12358 over 9 years ago