Standard Eight: Thermochemistry

What is temperature?

• How hot something is

• Average kinetic energy of a substance

• Energy transfer to a system

What is heat?

• How cold something is

• Thermal energy transferred between systems

• How hot something is

• Average kinetic energy of a system

True or False: Particles are constantly moving in an object.

• True

• False

What is the unit of heat and energy?

• kilograms (kg)

• C or K

• moles (mol)

• Joules (J)

A reaction that releases heat from the system is...

• exothermic

• endothermic

• thermic

• nonthermic

A reaction that absorbs heat into the system is...

• exothermic

• endothermic

• thermic

• nonthermic

When heat transfers, it moves...

• From a smaller system to a bigger one

• From a bigger system to a smaller one

• From a cooler system to a hotter one

• From a hotter system to a cooler one

If two objects reach the same temperature they are at...

• Optimal Temperature

• Thermal Equilibrium

• Thermocity

• The Equator.

Solid → Liquid

• Vaporization

• Condensation

• Melting

• Freezing

Liquid → Solid

• Vaporization

• Condensation

• Melting

• Freezing