3F - 5. Thermal Energy

What are the three states of matter?

• Liquid, Gas, Vapor

• Solid, Liquid, Gas

• Solid, Gas, Foam

• Solid, Liquid, Plasma

According to the kinetic theory, what are matter's tiny particles doing?

• Changing states

• Attracting each other

• Constantly in motion

• Forming bonds

What is the fixed shape and volume characteristic of?

• Gas

• Solid

• Liquid

• Plasma

What happens to the particles in a liquid?

• They are fixed in place

• They vibrate but cannot move past each other

• They are widely spaced

• They can move past each other

What is the smallest possible amount of an element called?

• Atom

• Compound

• Molecule

• Element

What is the term for the total kinetic and potential energies of all particles in a material?

• Potential energy

• Kinetic energy

• Internal energy

• Thermal energy

What is the Celsius scale's boiling point for water?

• 200°C

• 0°C

• 50°C

• 100°C

What is thermal expansion?

• Decrease in volume when cooled

• Increase in temperature

• Increase in volume when heated

• Decrease in pressure

What happens to water when it freezes?

• It boils

• It contracts

• It expands

• It evaporates

What is the effect of evaporation on temperature?

• It increases temperature

• It decreases temperature

• It has no effect

• It doubles temperature