6th Mod7L2 States of Matter

The combined total of the KE and PE in a material is called ________.

• radiant energy

• nuclear energy

• chemical energy

• thermal energy

When water is heated on a stove, which kind of energy is transferred from the element to the water?

• element energy

• heat energy

• kinetic energy

• thermal energy

While a substance is boiling, its temperature (KE) ______?

• increases

• decreases

• does not change

• may increase or decrease, depending on the substance

Thermal Energy can increase even if the average KE is constant.

• True

• False

Adding thermal energy to a cup of water may cause the particles to ______.

• move faster

• move closer together

• slow down

• collide less frequently

During a hot shower, water vapor fogs up the cooler mirror when it turns to water. This is an example of _________.

• condensation

• deposition

• sublimation

• vaporization

Marco put a pot of water on to boil eggs. Half an hour later, he returned to find the post dry. This is an example of ________.

• condensation

• deposition

• sublimation

• vaporization

Which has more total energy (thermal energy) between the two items?

1. Substance: X, Mass: 50g, Temp: 50^OC, State: Liquid

2. Substance: X, Mass: 50g, Temp: 50^OC, State: Solid

• Item #1

• Item #2

True/False: Thermal Energy is the same as temperature.

• True

• False

True/False: The more attracted particles are to each other, the higher the melting and boiling point temperatures.

• True

• False