Exploring Thermochemistry Concepts

What does thermochemistry study?

• The study of cold substances

• The study of temperature only

• The study of heat in physical changes

• The study of heat in chemical reactions

Who introduced the Celsius temperature scale?

• Anders Celsius

• Galileo Galilei

• Albert Einstein

• Isaac Newton

What is the boiling point of water in Celsius?

• 0 degrees

• 50 degrees

• 212 degrees

• 100 degrees

What is the ideal temperature for human bathwater in Celsius?

• 20 degrees

• 37 degrees

• 100 degrees

• 0 degrees

How is heat different from temperature?

• Temperature depends on the amount of substance, while heat does not.

• Heat depends on the amount of substance, while temperature does not.

• Heat and temperature are the same.

• Heat measures average kinetic energy, while temperature measures total kinetic energy.

What unit is used to measure heat?

• Celsius

• Joule

• Kelvin

• Fahrenheit

What instrument is used to measure temperature?

• Thermometer

• Calorimeter

• Hygrometer

• Barometer

What does the law of conservation of energy state?

• Energy can be created and destroyed.

• Energy can only exist in the form of heat.

• Energy is only transformed from one form to another.

• Energy is always lost when work is done.

How does heat flow?

• From cold to hot

• From hot to cold

• Equally in all directions

• Heat does not flow

What is kinetic energy?

• Energy that cannot be transferred

• Energy due to movement

• Energy due to position

• Energy stored in bonds