Chemistry - 2nd 6 weeks - Part 1

Which of the following is true for the 1^st law of thermodynamics;

• Energy can be created

• Energy comes in many forms, but must stay in that form

• Energy can be transferred

• Energy can be destroyed

Stored energy is classified as ___________ energy.

• Chemical

• Thermal

• Kinetic

• Potential

A hand warmer gets warm after the molecules inside the container combine. Based only on the information provided, which of the following shows the energy change?

• chemical to thermal

• kinetic to potential

• thermal to potential

• kinetic to thermal

A cold piece of iron is placed inside of an empty bowl. Boiling water is poured on top of the iron. Which of the following is true about this experiment:

• The cold energy from the water will transfer into the metal

• The metal will get warmer because the water will add energy to it.

• The metal will transfer energy to the water, making the water get warmer.

• The metal will transfer energy to the water, making the water get colder.

Energy that is located within the bonds of a molecule is classified as __________ energy.

• Thermal

• Kinetic

• Gravitational

• Chemical

Energy associated with movement is also classified as _____________ energy.

• Gravitational energy

• Chemical energy

• Kinetic energy

• Potential energy

A race car gets slightly bumped by another driver during a NASCAR race. This causes the race car that was bumped to slam into the wall.

Based only on the information provided, what two forms of energy are present in this example?

• Thermal and Chemical

• Potential and Kinetic

• Thermal and Potential

• Kinetic and Chemical

According to the first law of thermodynamics, energy cannot be _______ or _______. But it can be ____________.

• destroyed, transferred, created

• created, transferred, conserved

• destroyed, transferred, conserved

• created, destroyed, transferred

Which type of energy is correctly paired with its description?

• Chemical: energy found in the bonds between atoms

• Thermal: energy found in the bonds between atoms

• Kinetic: associated with stored energy

• Potential: associated with movement of molecules