Quiz #3 P.C Review

What is the main factor that determines whether a material burns or melts?

• Color and texture
• Pressure
• Flash point and melting point
• Size and weight

What can be done to make liquid chocolate back into solid chocolate?

• Adding energy (heating it)
• It can not return to solid form after melting
• Removing energy (letting it cool)
• Mixing it with water hot water

When you transfer energy into a substance, what happens to the temperature?

• It stays the same
• It decreases
• It becomes negative
• It increases

When you transfer energy into a substance, what happens to the molecules’ kinetic energy?

• It decreases
• It increases
• It stays the same
• It disappears

Is burning a phase change?

• Yes
• Trick question none of these are right
• It is a chemical reaction

When energy is transferred to or from a substance, it can change the molecules’ freedom of movement.

• True
• Neither true nor false
• False
• Not enough information

What happens to the kinetic energy of a substance when it transfers that energy to another substance?

• It is converted to potential energy
• It stays the same
• It loses kinetic energy
• It increases its kinetic energy

What is freedom of movement?

• the way molecules in a substance move around relative to each other
• the energy that an object has because it is moving
• a group of atoms joined together in a particular way
• a pull between two molecules that is always the same for a substance

What is kinetic energy?

• a pull between two molecules that is always the same for a substance
• the way molecules in a substance move around relative to each other
• a group of atoms joined together in a particular way
• the energy that an object has because it is moving

Which of the following is an example of a claim?

• Chocolate ice cream is the best flavor.
• A statement about the nutritional value of chocolate ice cream
• A study on the popularity of ice cream flavors
• A recipe for chocolate ice cream