Physical Science Heat Review

True or False: Kinetic energy is a measure of the energy an object has because of its motion

• TRUE

• FALSE

Solids have a fixed volume because the particles in a solid

• do not move at all

• can slide past each other

• move freely throughout the container

• cannot move from one place to another

At a given temperature and pressure, which of the following helps determine the physical state of a substance?

• the structure of particles

• the arrangement of particles

• the interactions between particles

• the differences in kinetic energy of particles

When heat is added to a solid substance that is NOT at its melting point, the

• temperature of the substance stays the same

• the temperature of the substance decreases

• the temperature of the substance increases

True or False: The boiling point of a substance is generally less than the melting point of a substance.

• TRUE

• FALSE

Gases can be pressed to fit in smaller spaces because there is

• less space between particles in a gas than between particles in a liquid

• the same amount of space between particles in a gas and between particles in a liquid

• more space between particles in a gas than between particles in a liquid

This type of phase change occurs when particles of a solid directly become a gas without first going through the liquid phase.

This type of phase change occurs when particles in a liquid state transition to the gaseous state.

This type of phase change occurs when particles in a gas begin to form a liquid.

A reaction that releases heat (feels warm to the touch) is

• exothermic

• endothermic