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Pile Management Card
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True or false.
In a mixture, the particles are evenly mixed.
False (this is true of a solution)
How can you separate a mixture containing sugar and nails?
Use a magnet.
Particles of matter move ___________ as heat is applied.
a. slower
b. faster
c. the same
b. faster
Name 3 clues that a chemical change has occurred.
1. produce heat
2. release gas
3. color change
4. produce light
What is the difference between a physical change and a chemical reaction?
In a chemical reaction, 1 or more new substances are formed.
In a physical change, no new substances are formed.
Name the 6 process that cause matter to change state.
1. boiling
2. melting
3. condensation
4. evaporation
5. freezing
6. sublimation
In what state of matter do particles move the fastest?
gas
An object weighs 600 pounds on Earth. What does it weigh on the moon?
100 pounds
An object has a mass of 600 kg on Earth. What is its mass on the moon?
600 kg
Mass per unit of volume is ____________.
density
What are 2 ways to measure the volume of a solid?
a. volume is length x width x height
b. measure the volume of water displaced when object is put in water
A substance seems to fill a container, but more can be forced in. The substance is a ______________.
a. solid
b. liquid
c. gas
c. gas
In which state(s) of matter are the particles far apart?
gas
In which state(s) of matter are the particles touching?
solid
liquid
In which state of matter do particles slide over each other?
liquid
The changing of a solid to a gas is called ________________________.
sublimation
A liquid is usually _________ than a gas.
a. denser
b. less dense
the same
denser
A solid is usually ______ than a liquid.
a. denser
b. less dense
c. the same
denser
Nitrogen can be compressed and cooled into a liquid at a very low temperature.
So, nitrogen normally exists as a
a.solid
b. liquid
c. gas
d. none of these
c. gas
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