Thermal and Chemical Energy

What happens in an exothermic reaction?

• Heat is released

• Heat is absorbed

• Heat is neither released nor absorbed

• Heat is converted to light

Tags

NGSS.HS-PS1-4

What is thermal energy?

• The energy that comes from heat

• The energy that comes from light

• The energy that comes from sound

• The energy that comes from electricity

Tags

NGSS.HS-PS3-4

How does adding thermal energy influence a chemical change?

• It decreases the number of collisions

• It increases the number of collisions

• It has no effect on the number of collisions

• It stops the collisions

Tags

NGSS.HS-PS1-5

What happens in an endothermic reaction?

• Heat is absorbed

• Heat is released

• Heat is neither released nor absorbed

• Heat is converted to light

Tags

NGSS.HS-PS1-4

What is an example of thermal energy?

• The heat released from burning coal

• The light from a bulb

• The sound from a speaker

• The electricity from a battery

Tags

NGSS.HS-PS3-4

What is the role of heat in an exothermic reaction?

• Heat is released

• Heat is absorbed

• Heat is converted to light

• Heat is converted to sound

Tags

NGSS.HS-PS1-4

What is the role of heat in an endothermic reaction?

• Heat is absorbed

• Heat is released

• Heat is converted to light

• Heat is converted to sound

Tags

NGSS.HS-PS1-4

What is the primary source of thermal energy in a combustion reaction?

• A) Chemical bonds

• B) Light energy

• C) Sound energy

• D) Electrical energy

Tags

NGSS.HS-PS3-4

Which of the following is an example of a chemical energy transformation?

• A) Burning wood to produce heat

• B) Melting ice to water

• C) Boiling water to steam

• D) Freezing water to ice

Tags

NGSS.HS-PS1-4

How does thermal energy affect the rate of a chemical reaction?

• A) Increases the rate

• B) Decreases the rate

• C) Has no effect

• D) Stops the reaction

Tags

NGSS.HS-PS1-5