Question

1. what are the 4 states of matter?

a. solid, liquid, gas, and plasma
b. ice, water, and steam
c. temperature, pressure, and energy
d. hot, cold, and warm

1. compared to ice, how do molecules of liquid water behave?

a. they move less freely
b. they are locked into a crystal lattice
c. they move more freely
d. they bounce off one another randomly

1. which state of matter has particles that are moving extremely fast causing the electrons to separate from the atom?

a. gas
b. plasma
c. liquid
d. solid

1. what do water vapor, liquid water, and ice have in common?

a. they all have the same crystal lattice structure.
b. they are all still composed of h₂o.
c. the same physical properties.
d. the same amount of energy.

1. what’s the easiest way to add energy to matter?

a. increasing temperature
b. cooling it
c. decreasing pressure
d. decreasing temperature

1. the temperature at which a liquid turns into a solid is its

a. boiling point
b. vaporization point
c. fusion point
d. freezing point

1. what is it called when a solid turns directly into a gas?

a. sublimation
b. vaporization
c. melting
d. fusion

1. dry ice has the same chemical properties as what gas?

a. helium
b. hydrogen
c. nitrogen
d. carbon dioxide

1. when thermal energy is removed from a gas, what happens to the particles?

a. they vibrate in place and change into a solid immediately
b. they bounce around randomly and move very fast causing the electrons to separate from the atom
c. the movement slows down and the particles move closer together causing the gas to condensate into a liquid
d. they spread apart and turn into a liquid

Explanation:

1. States of matter are solid, liquid, gas, plasma.
2. Liquid water molecules move more freely than ice.
3. Plasma has fast - moving particles causing electron - atom separation.
4. Water vapor, liquid water, ice are all H₂O.
5. Increasing temperature adds energy to matter.
6. Liquid to solid is freezing point.
7. Solid to gas is sublimation.
8. Dry ice is solid CO₂.
9. Removing gas thermal energy slows particle movement, causes condensation.

Answer:

1. a. Solid, liquid, gas, and plasma
2. c. They move more freely
3. b. plasma
4. b. They are all still composed of H₂O.
5. a. Increasing temperature
6. d. Freezing point
7. a. Sublimation
8. d. Carbon dioxide
9. c. The movement slows down and the particles move closer together causing the gas to condensate into a liquid