Heat Quiz

Question 0

Thermal Energy

Answer 0

KEavg * # of molecules

Question 1

Heat

Answer 1

Thermal energy in transit

Question 2

Total internal energy

Answer 2

The total amount of energy stored. Includes thermal PLUS rotational, molecular bonds.

Question 3

Temperature

Answer 3

Avg KE of the molecules. If the mass is big and the object has a higher specific heat, then there is a smaller temperature change.

WATER BOILS 212°F 100°C 373K
WATER FREEZES 32°F 0°C 213K
ABSOLUTE ZERO -459°F -273°C 0K

Question 4

Thermal equilibrium

Answer 4

No heat energy flowing between materials. Everything in a system is at the same temperature.

Question 5

Conductors

Answer 5

Something that transfers heat, because KE is transferred from one object to another. A good conductor has electrons loosely bound to the nucleus. The particles keep bumping into each other and the heat is transferred.
Examples: copper, aluminum, silver, iron.

Question 6

Insulators

Answer 6

Don’t transfer heat well. Electrons are tightly bound to the nucleus and aren’t free to move, so particles can’t bump into each other and transfer heat.
Examples: air, water, snow, wood, wool, plastic.

Question 7

Heat flow

Answer 7

Always goes from hotter object to colder object.