U4 Test Energy and Matter

Copper (specific heat 0.38 J/g C), granite (specific heat 0.79 J/g C) and dry air (specific heat 1.01

J/g C) were all heated using the same amount of energy. What material would have the largest change in temperature?

• Copper

• Granite

• Dry air

• All temperature changes are the same

What is the letter for heat energy?

• C

• m

• Q

What is the letter for specific heat?

• C

• m

• Q

What is the letter for change in temperature?

• C

• m

• Q

Heat always travels from ...

• warm to warm

• cool to cool

• warm to cool

• cool to warm

Which would be the best insulator?

• copper

• granite

• dry air

• all are good conductors

• °C/g J

• kJ/g

• J/g °C

• g/J C

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down

• They would stop moving

• There would be no effect

• They would speed up

If two objects have different temperatures when they come in contact, heat will flow from the warmer object to the cooler one UNTIL _____

• they both have an equal temperature

• one reaches a temperature of zero

• one runs out of energy

• a phase change occurs

Which law of thermodynamics states that the transfer or conversion of heat energy are irreversible and always move toward more disorder. Example: melting ice cube.

• 0th

• 1st

• 2nd

• 3rd