States of Matter and Thermal Energy

Front

What is thermal energy transfer that causes your skin to feel warm when in the sun?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, which is how the sun warms your skin.

Front

Heat transfers from an area of ________ temperature to an area of _______ temperature.

Back

Heat transfers from an area of high temperature to an area of low temperature.

Front

True or False: Heat, thermal energy, and temperature are related.

Back

False. Heat, thermal energy, and temperature are related concepts in thermodynamics.

Front

What happens to the temperature when molecules move faster?

Back

The higher the temperature, the faster the molecules move.

Front

What is the study of matter called?

Back

Chemistry is the study of matter and its interactions.

Front

Define conduction.

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

Define convection.

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids and gases).

Front

What is the difference between heat and temperature?

Back

Heat is the total energy of molecular motion in a substance, while temperature measures the average energy of that motion.

Front

What is evaporation?

Back

Evaporation is the process by which molecules at the surface of a liquid gain enough energy to enter the gas phase.

Front

What is the relationship between temperature and molecular motion?

Back

As temperature increases, the motion of molecules increases.