ENERGY TRANSFER, HEAT, MATTER, THERMAL ENERGY

11. When a substance changes from solid to gas and does not go through the liquid phase it is called what?

• Evaporation
• Condensation
• Freezing
• Sublimation

30. After testing, you may decide to modify your device. This is known as __________.

• Prototype
• Control
• Trial One
• Redesigning

9. If the liquid is heated, what type of change occurs?

• Increased energy
• Condensation
• Freezing
• Sublimation

38. When air cools down the molecules

• Speed up
• Slow down
• Stay the same

20. The faster the molecules are moving,

• The higher the temperature
• The lower the temperature will be
• Particle movement does not relate to temperature

1. Solid particles are

• Loosely bonded and flowing
• Tightly packed
• Free to fly around
• Very hot

24. What is thermal equilibrium?

• When two objects are at rest at the same time
• Potential energy
• When objects reach boiling point
• When two objects reach a common temperature

2. The temperature at which a substance changes from a solid to a liquid.

• Boiling point
• Melting point
• Freezing point

27. If you were building a thermos to keep liquid warm, what type of materials would you look for?

• Insulators
• Conductors
• Liquid
• None of these

3. Particles move the slowest in what phases?

• Solid
• Liquid
• Gas