Chemistry #3 Heat

What is potential energy?

• Energy that is stored

• Energy that is used

• Energy that is useless

• Energy that is useable

What is kinetic energy?

• Energy of storage

• Energy of motion

• Energy of matter

• Energy of Chemicals

What is heat energy?

• Decrease of particles from high temperature to low temperature (thermal energy)

• Random movement of particles from low temperature to high temperature (thermal energy)

• Random movement of particles from high temperature to low temperature (thermal energy)

• Random movement of nuclear particles from low temperature to high temperature (thermal energy)

Which type of energy is associated with the random motion of atoms and molecules in a sample of air?

• chemical energy

• electrical energy

• nuclear energy

• thermal energy

What is the conservation of energy law?

• Energy can not be created or destroyed; it can only change from one form to another

• Energy can be created and destroyed; it can change from one form to another

• Energy can not be visible; it can only visible from one form to another

• Energy can not be used in any way

Which term is defined as the measure of the average kinetic energy of the particles in a sample?

• Pressure

• Temperature

• Thermal energy

• Chemical energy

If you had to draw an arrow between the two boxes below to show how heat flows, which direction would the arrow point?

• ↑ up

• ↓ down

• ← left

• → right

What is the unit is used to express an amount of thermal energy?

• Pascals

• Moles

• Grams

• Joules

Which tool is used to measure heat and energy?

• Calorimeter

• Thermometer

• Scale

• Measuring Tape

What is an exothermic reaction?

• When heat is destroyed, the surrounding temperature increases and it feels extremely hot (Over 415 degrees celsius hot)

• When heat is released, the surrounding temperature increases and it feels hot

• When heat is absorbed, the surrounding temperature decreases and it feels cold

• When heat is made up, the surrounding temperature decreased and it feels warm