Flashcards
Exam review
Flashcards do conjunto (48)
- 1A property that describes how the object or substance looks for example the luster of a carphysical properties
- 2A property that describes the chemical reactions of a substance, for example the combustibility of woodchemical property
- 3If a car is shiny is that a physical or chemical property?physical
- 4if an aluminum sheet is pounded into a sheet is that a physical or chemical property?physical
- 5if magnesium reacts with water is that a chemical or physical propertychemical
- 6if the density of distilled water is 1.00 g/mL is that a physical or chemical propertyphysical
- 7if wood burns well is that a physical or chemical propertychemical
- 8D=M/V, how the amount of room and how much it weighs relate to each other are the formula and definition of whatdensity
- 9a small rock was placed in an overflow can The student caught the amount of water that came out of the spout. the volume of the water was 15 mL, the rock weighed 30 g what is the density of the rockD= M/V
D= 30/15
D= 2g/mL - 10When the object or substance changes how it looks not because of chemical reactionsphysical change
- 11When the substance changes because of a reaction with another substance, or when the substance becomes something elsechemical change
- 12is cutting paper a physical or chemical changephysical
- 13is burning paper a physical or chemical changechemical
- 14is cracking an egg a physical or chemical changephysical
- 15if sugar dissolves is that a physical or chemical changephysical
- 16if iron react with oxygen is that a physical or chemical changechemical
- 17the substance has changed colour the substance's odour has changed the substance has created heat or light the substance has created bubbles a precipitate is formed are what?5 ways to tell if chemical change has occurred
- 18all matter is made of particles, particles have spaces between them, particles are constantly moving, all particles in pure substances are the same is what theoryparticle theory
- 19what are the 3 subatomic particlesneutron, proton, electron
- 20what charge does a proton havepositive
- 21what charge does a neutron havenone
- 22what charge does a electron havenegative
- 23what subatomic particles movethe electrons
- 24what is the relative mass of a proton1 amu
- 25what is the relative mass of a electronpretty much mass-less
- 26what is the relative mass of a neutron1 amu
- 27what does the atomic number representthe number of protons and electrons in an atom
- 28what does the atomic mass representthe total mass of the protons and neutrons
- 29what are the key properties of metalslustrous, solid, usually grey, conduct heat and electricity
- 30what are the key properties of non-metalsnot lustrous, don't conduct heat or electricity, can be bright colours
- 31what are key properties of metalloidsthey have properties of both metal and non-metal elements
- 32what are the key properties of alkali metalsthey are highly reactive, lustrous and sliver coloured
- 33what are the key properties of alkaline earth metalsthey are fairly reactive but not as reactive as the alkali metals
- 34what are the key properties of halogensmost reactive of non-metals, usually found in compounds
- 35what are key properties of the noble gasesstable/nonreactive b/c pf full valence shells
- 36what happens to the number of valence electrons as you move down a column on the Periodic tableit gets bigger (that's why the noble gases are barely reactive
- 37what is the law of electric chargesopposites attract
likes repel - 38what's an insulatoran object that absorbs electric charge
examples: rubber, wood - 39what's a conductoran object attract electricity to it
examples: silver, water - 40list 3 ways a object can be electrically chargedfriction (rubbing), induction (bringing close together but not touching), contact (touching)
- 41What charge does acetate and zinc have when charged by frictionacetate is positive and zinc is negative
- 42what charge does rubber and cotton have when charged by frictionrubber is negative and cotton is positve
- 43what is the purpose of groundingto remove extra electrons
- 44what is electric currentHow much electricity runs through out a circuit
- 45what are the units that electric current is measured inamp (A)
- 46what instrument is used to measure electric currentammeter
- 47what is electric potential measured involts (V)
- 48what instrument is used to measure electric potentialvoltmeter
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- Grade 9 Science FlashCards sobre Exam review , criado por Mikyah Ansty em 19-06-2017.
- Criado por
- Mikyah Ansty
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