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Quiz von Afia Oduro-Manu, aktualisiert more than 1 year ago
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Erstellt von Afia Oduro-Manu
vor mehr als 7 Jahre
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Frage 1
Frage
The basic unit of matter is called an [blank_start]atom[blank_end]
Antworten
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atom
Frage 2
Frage
What subatomic particles make up atoms?
Antworten
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Isotopes
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Protons
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Particles
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Neutrons
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Molecules
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Electrons
Frage 3
Frage
PROTONS determine an element's...
Antworten
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Atomic mass
-
Atomic number
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Number on the periodic table
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Atomic weight
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Nucleus's Charge
Frage 4
Frage
Isotopes are...
Antworten
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Atoms of a DIFFERENT element that have the SAME number of neutrons they contain
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ATOMS of a DIFFERENT element that have DIFFERENT number of neutrons
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Atoms of the SAME element that DIFFER in the number of neutrons the contain
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Atoms of the SAME element that have the SAME number of neutrons
Frage 5
Frage
Where in an atom do PROTONS and NEUTRONS lie?
Antworten
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Orbit
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Nucleus
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Outside of the atom's orbit
-
Close to the circumference of the nuclues
Frage 6
Frage
All atoms of the same element have the same number of...
Antworten
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Electrons
-
Neutrons
-
Protons
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Molecules
Frage 7
Frage
What subatomic particle determines what the element is?
Antworten
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Protons
-
Neutrons
-
Electrons
-
Isotopes
Frage 8
Frage
ELECTRONS orbit around the nucleus of an atom.
Antworten
- True
- False
Frage 9
Frage
What is the weakest type of chemical bond?
Antworten
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Covalent
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Hydrogen
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Ionic
Frage 10
Frage
What element forms chemical bonds?
Antworten
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Oxygen
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Carbon
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Hydrogen
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Helium
Frage 11
Frage
COVALENT BONDS are formed when...
Antworten
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Electrons in an atom are transferred to another atom
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Electrons in an atom are shared
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Electrons in an atom bond with the atom's neutrons
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Electrons travel between the nuclei of both atoms
Frage 12
Frage
IONIC BONDS are formed when...
Antworten
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Electrons are “stolen” from one atom and taken to the next
-
Electrons are shared between atoms
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Some of the atom's electrons are transferred to another atom
-
Another atom destroys its own protons to weaken its bond
Frage 13
Frage
The number of NEUTRONS and ELECTRONS in an atom are usually always the same.
Antworten
- True
- False
Frage 14
Frage
How many types of substances make a CHEMICAL ELEMENT?
Antworten
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1
-
2
-
3
-
4
Frage 15
Frage
Why are atoms NEUTRAL despite having charged particles?
Antworten
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Same amount of PROTONS and ELECTRONS balance out the charge in an atom
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Same amount of PROTONS and NEUTRONS balance out the charge in an atom
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Different amounts of PROTONS and ELECTRONS maintain stability in an atom
-
Different amounts of ELECTRONS and NEUTRONS balance out the charges in an atom
Frage 16
Frage
How are isotopes identified?
Antworten
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Atomic number
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Atomic mass
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Atomic balance
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Atomic neutrality
Frage 17
Frage
Atomic [blank_start]mass[blank_end] is the [blank_start]weighted[blank_end] average of the masses of an element's [blank_start]isotopes[blank_end]
Antworten
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mass
-
number
-
weight
-
measured
-
weighted
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divided
-
electrons
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neutrons
-
protons
-
isotopes
Frage 18
Frage
WEIGHTED in Biology/Chemistry/Physics means the [blank_start]abundance[blank_end] of each [blank_start]isotope[blank_end] in [blank_start]nature[blank_end] is considered when the average is calculated
Antworten
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abundance
-
lack
-
isotope
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Electron
-
Proton
-
Neutron
-
nature
-
similarities
-
differences
Frage 19
Frage
Why do all isotopes of an element have the same chemical properties?
Antworten
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Because they have DIFFERENT numbers of PROTONS
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Because they have ALMOST EQUAL amounts of MOLECULES
-
Because they have DIFFERENT numbers of NEUTRONS
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Because they SHARE the same number of ELECTRONS
Frage 20
Frage
A chemical compound is formed when [blank_start]2+[blank_end] elements are combined chemically
Antworten
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0-1
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1-2
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2+
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2-3
Frage 21
Frage
The formula for table salt is [blank_start]NaCl[blank_end]
Antworten
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SmCl
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SoCl
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NaCl
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SiCl
Frage 22
Frage
Sodium is a [blank_start]metal[blank_end] and chloride is a [blank_start]gas[blank_end].
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gas
-
metal
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gas
-
metal
Frage 23
Frage
An ion is an atom that is...
Antworten
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Negatively charged
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Positively charged
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Neutrally charged
Frage 24
Frage
An atom that loses electrons has a negative charge.
Antworten
- True
- False
Frage 25
Frage
A [blank_start]triple[blank_end] [blank_start]covalent[blank_end] bond is formed when [blank_start]six[blank_end] electrons are shared.
Antworten
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covalent
-
ionic
-
single
-
triple
-
double
-
two
-
six
-
four
Frage 26
Frage
In a [blank_start]water[blank_end] molecule, each [blank_start]hydrogen[blank_end] atom forms a [blank_start]single[blank_end] covalent bond.
Antworten
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hydrogen
-
water
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hydrogen
-
carbon
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single
-
double
Frage 27
Frage
The slight attractions that develop between oppositely charged region of nearby particles are called
[blank_start]Van der Waals forces[blank_end]
Antworten
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Van der Waals forces
Frage 28
Frage
Acidic solutions are [blank_start]compounds[blank_end] that form [blank_start]H+ ions[blank_end] in solution.
Antworten
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compounds
-
H+ ions
Frage 29
Frage
Water molecules are polar because of [blank_start]uneven[blank_end] distribution [blank_start]between[blank_end] their two poles (the [blank_start]negative[blank_end] attracts [blank_start]oxygen[blank_end] and the positive attracts [blank_start]hydrogen[blank_end] atoms).
Antworten
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uneven
-
equal
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positive
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negative
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oxygen
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hydrogen
-
oxygen
-
hydrogen
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between
-
outside of
-
around
Frage 30
Frage
Substances that combine physically form [blank_start]mixtures[blank_end], while substances that combine chemically form [blank_start]compounds[blank_end].
Antworten
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mixtures
-
compounds
Frage 31
Frage
Acidic solutions have lesser concentrations of H+ ions than pure water.
Antworten
- True
- False
Frage 32
Frage
Basic solutions produce...
Antworten
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OH- (hydroxide) ions
-
Small amounts of H+ ions
-
O- ions
-
HO- ions
Frage 33
Frage
[blank_start]Acidic[blank_end] solutions have pH levels below [blank_start]7[blank_end], and even from [blank_start]1[blank_end] to [blank_start]3[blank_end].
Antworten
-
Acidic
-
7
-
1
-
3
Frage 34
Frage
The polar, neutral WATER molecule has an equal amount of protons and electrons, [blank_start]10[blank_end] each.
Antworten
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10
Frage 35
Frage
The attraction between the hydrogen atom on [blank_start]water[blank_end] molecule and the [blank_start]oxygen[blank_end] atom on another water molecule is an example.
Antworten
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water
-
oxygen
Frage 36
Frage
The two forms of attraction are [blank_start]co[blank_end]hesion and [blank_start]ad[blank_end]hesion.
Antworten
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co
-
ad
Frage 37
Frage
An evenly (molecule) mixed mixture is called a [blank_start]solution[blank_end].
Antworten
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solution
Frage 38
Frage
The greatest solvent in the world is [blank_start]water[blank_end].
Antworten
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water
Frage 39
Frage
Suspension is mixtures of...
Antworten
-
Water and dissolved material
-
Water and undissolved material
-
Water and partly dissolved material
Frage 40
Frage
The solute the substance that is dissolved in the solution.
Antworten
- True
- False
Frage 41
Frage
The pH scale indicates the concentration of [blank_start]H+ ions[blank_end] in a [blank_start]solution[blank_end].
Antworten
-
solution
-
H+ ions
Frage 42
Frage
A solution with a pH of 4 has [blank_start]40[blank_end] [blank_start]H+[blank_end] [blank_start]ions[blank_end], while one with a pH of 5 has [blank_start]50[blank_end],
Antworten
-
40
-
50
-
H+
-
ions
Frage 43
Frage
Basic solutions have pH levels [blank_start]high[blank_end]er than [blank_start]7[blank_end], and especially from [blank_start]11[blank_end] to [blank_start]14[blank_end].
Antworten
-
7
-
11
-
14
-
high
Frage 44
Frage
Buffers are [blank_start]weak[blank_end] [blank_start]acids/bases[blank_end] that can react with [blank_start]strong acids[blank_end] to prevent [blank_start]sharp[blank_end], [blank_start]sudden[blank_end] changes in pH.
Antworten
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weak
-
sharp
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sudden
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strong acids
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acids/bases
Frage 45
Frage
Carbohydrates contain the following atoms...
Antworten
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Oxygen
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Helium
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Carbon
-
Hydrogen
Frage 46
Frage
Single sugar molecules are also called [blank_start]Monosaccharides[blank_end]
Antworten
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Monosaccharides
Frage 47
Frage
Some monosaccarides are...
Antworten
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Glucose
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Galactose
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Fructose
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Glycogen
Frage 48
Frage
Some polysaccarides are...
Antworten
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Glucose
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Glycogen
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Starch
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Fructose
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Cellulose
Frage 49
Frage
What are the main functions of carbohydrates?
Antworten
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As an energy suppliant
-
To store starch
-
For strength and rigidity in an animal/plant
Frage 50
Frage
What atoms are lipids made of?
Antworten
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Helium
-
Hydrogen
-
Carbon
-
Oxygen
Frage 51
Frage
THe three categories of lipids are...
Antworten
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Saturated
-
Unsaturated
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Monosaturated
-
Polyunsaturated
Frage 52
Frage
When glycerol is combined with [blank_start]fatty acids[blank_end] a lipid is formed.
Antworten
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fatty acids
Frage 53
Frage
SATURATED LIPIDS contain one carbon bond, UNSATURATED LIPIDS contain 1+ carbon bonds, while POLYUNSATURATED LIPIDS contain 2+ carbon bonds
Antworten
- True
- False
Frage 54
Frage
Nucleic acids contain what type of atoms
Antworten
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Hydrogen
-
Helium
-
Carbon Dioxide
-
Carbon
-
Oxygen
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Nitrogen
-
Phosporous
Frage 55
Frage
[blank_start]Nucleotides[blank_end] are the monomers of nucleic acids.
Antworten
-
Nucleotides
Frage 56
Frage
Nucleic acids are composed of a [blank_start]5-carbon[blank_end] sugar, a [blank_start]phosphate group[blank_end] [blank_start](-PO4)[blank_end], and a [blank_start]nitrogenous[blank_end] base.
Antworten
-
phosphate group
-
(-PO4)
-
nitrogenous
-
5-carbon
Frage 57
Frage
Nucleic acids keep genetic information and transport energy.
Antworten
- True
- False
Frage 58
Frage
RNA ([blank_start]Ribonucleic[blank_end] acid) is made out of [blank_start]ribose[blank_end] sugar and DNA ([blank_start]Deoxyribonucleic[blank_end] acid) is made out of [blank_start]deoxyribose[blank_end] sugar.
Antworten
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deoxyribose
-
Deoxyribonucleic
-
ribose
-
Ribonucleic
Frage 59
Frage
Proteins are composed of the atoms...
Antworten
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Nitrogen
-
Helium
-
Carbon
-
Phosphorous
-
Hydrogen
-
Oxygen
Frage 60
Frage
The monomers of protein are...
Antworten
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Carbon bonds
-
Amino acids
-
Protein
-
Protein acids
Frage 61
Frage
Proteins
1)Control the rate of reactions
2)Regulate cell processes
3)Form cell membranes
4)Transport substances in or out of cells
5)Work with the immune system
Antworten
- True
- False
Frage 62
Frage
Valence electrons have [blank_start]stable[blank_end] or [blank_start]non-reactive[blank_end] [blank_start]shells[blank_end] and determine [blank_start]reactivity[blank_end] on the [blank_start]outer ring[blank_end] of the atom.
Antworten
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stable
-
non-reactive
-
shells
-
reactivity
-
outer ring
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