Intro To Thermochemistry

Multiple Choice

What is the definition of thermochemistry?

• Thermochemistry is the study of the heat changes that occur during chemical reactions and physical changes of state.

• Thermochemistry is the analysis of the physical properties of gases.
• Thermochemistry focuses on the color changes in chemical substances.
• Thermochemistry is the study of sound waves in chemical reactions.

Multiple Choice

What is the definition of energy?

• Energy is a type of matter.
• Energy is the speed of light.
• Energy is a form of heat.
• Energy is the ability to do work or supply heat.

Multiple Select

Which of the following are types of energy?

• Kinetic

• Potential

• Heat

• Nuclear

• Wind

Multiple Choice

In which direction does heat flow?

• From cold to hot
• From hot to cold
• Only through solid materials
• In all directions equally

Multiple Choice

In a chemical reaction, heat can either be given off or absorbed. Which is the correct type of reaction based on if heat is given off or absorbed?

• Exothermic if heat is given off; Endothermic if heat is absorbed.
• Exothermic if heat is absorbed; Endothermic if heat is given off.
• Both reactions are exothermic regardless of heat flow.
• Endothermic if heat is neither given off nor absorbed.

Multiple Choice

What does the law of conservation of energy state?

• Energy can only be created from matter.
• Energy cannot be created or destroyed, only transformed.
• Energy can be created and destroyed.
• Energy is always lost in transformations.