Question

1. what is matter? choose the best answer.

a. anything that is solid
b. anything that has mass and takes up space
c. anything that has a fixed volume
d. anything that can be seen

1. in what way are liquids different from solids?

a. liquid molecules are lighter than solid molecules
b. liquids are made of atoms; solids are made of molecules
c. liquids dont have a definite shape; solids do
d. liquids are always denser than solids

1. what happens to the particles of water in a block of ice as the temperature is increased?

a. water molecules break apart to form individual atoms of hydrogen and oxygen
b. water molecules harden into ice molecules
c. water molecules melt into gas molecules
d. the particles move faster and faster and begin to spread causing the water to change its state of matter

1. what will happen if you keep increasing both the pressure and temperature of a liquid?

a. it will boil
b. it will transpire
c. it will melt
d. it will solidify

1. what do lightning and stars have in common?

a. both have no electrical charge
b. both contain plasma
c. both have a fixed volume
d. both contain all three states of matter

1. which of the following describes the particles of a gas?

a. very loosely arranged and moving very fast
b. moving slow and vibrating, packed tightly together
c. loosely arranged and not moving
d. arranged in a pattern of positives and negatives

1. what is the basic shape of a liquid?

a. a sphere
b. the same shape as a gas, only rounder
c. a cube
d. whatever shape its container is

1. how can you remove energy from matter?

a. by increasing its volume
b. by lowering its temperature
c. by increasing its pressure
d. by boiling it

1. gases have a tendency to expand. whats the best synonym for \expand?\

a. collide
b. spread out

Explanation:

1. Matter has mass and occupies space.
2. Liquids lack definite shape, solids have it.
3. Heating ice makes particles move faster.
4. Increasing pressure - temp boils liquid.
5. Lightning and stars have plasma.
6. Gas particles are loosely - fast - moving.
7. Liquid takes container's shape.
8. Lowering temp removes energy.
9. "Spread out" is like "expand".

Answer:

1. b. Anything that has mass and takes up space
2. c. Liquids don't have a definite shape; solids do
3. d. The particles move faster and faster and begin to spread causing the water to change its state of matter
4. a. It will boil
5. b. Both contain plasma
6. a. very loosely arranged and moving very fast
7. d. Whatever shape its container is
8. b. By lowering its temperature
9. b. Spread out