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32 Cards in this Set
- Front
- Back
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What is the difference between a physical change & a chemical change?
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A physical change allows the item to stay the same, but a chemical change creates a new substance.
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What is the relationship between the chemical properties of a substance and the chemical changes of a substance?
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Reacting = chemical properties tells you what changes occur.
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Physical or chemical change?
a snow bank shrinking on a cold day |
physical
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Physical or chemical change?
Forming a bar of gold into wire |
physical
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Physical or chemical change?
bleaching a sheet and pillowcase |
chemical
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If you had a mixture of 2 substances and had your choice of using physical or chemical change to separate them, which would you prefer?
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Physical change because chemical change would change the whole substance.
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The freezing point of a substance is the same as its ___ point
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melting
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When a substance freezes, it ___
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loses energy
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Boiling involves the same change of state as _____
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evaporation
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Solid, gas, or liquid?
particles are held tightly in place |
solid
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Solid, gas, or liquid?
has a definite shape |
solid
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particles slide over one another
solid gas or liquid? |
liquid
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solid, gas or liquid?
particles are far apart |
gas
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The state of matter that has no definite shape or volume.
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gas
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the pull of gravity on matter
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weight
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changing from a gas to a liquid
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condensation
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the amount of matter in an object
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mass
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the ability of a substance to dissolve
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solubility
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the changing of a liquid to a gas
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evaporation
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the ability of a substance to react chemically
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reactivity
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the characteristics of a substance that can be measured without changing the substance
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physical properties
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mass per unit of volume
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density
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the state of matter with a definite shape and volume
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solid
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the ability to burn
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combustibility
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anything that has mass and occupies space
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matter
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the amount of space anything occupies
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volume
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the state of matter with a definite volume but no definite shape
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liquid
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An object has a mass of 120 g on Earth. On the moon it would have a mass of ____
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120 g
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The density of a steel hammer is 7.9 g/cm3 on Earth. On a spaceship it would have a density of ___
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7.9 g/cm3
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T/F
A milliliter is a unit of volume. |
True
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T/F
Materials ARE changed when physical properties are measured. |
False
ARE NOT |
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T/F
In a MIXTURE, the particles are evenly mixed. |
False
SOLUTION |
