States of Matter

(a)   occurs when a liquid changes to a gas below its surface as well as at the surface.

What state of matter is the air that we breathe?

• solid

• liquid

• gas

Pick the gas

• milk

• chair

• ice

• water

• oxygen

What is it called to make a solid become a liquid?

• freezing

• melting

• boiling

How are you doing in class?

• I try my very best

• I try sometimes

• I don't try sometimes in this class

• I don't try at all in this class

Identify the phase change for arrow 3 in the diagram and write its definition.

• Condensing = gas to liquid, exothermic
• Vaporizing - liquid to gas, endothermic
• Melting = solid to liquid, endothermic
• Freezing = liquid to solid, exothermic

Which form of matter take the shape of a container like this juice?

• liquid
• solid
• glass
• gas

If this ice cream scoop melts, what will change?

• color
• shape
• flavor

Which form of matter fills the space like it has in the balloon?

• liquid
• string
• solid
• gas

Which of the following statements is NOT true of all different types of matter?

• They are made of atoms and molecules
• The particles are always in motion
• The particles always move at the same speed
• They are made of particles that are too small to see