Identifying Exothermic and Endothermic Reactions

What is an example of an exothermic reaction?

• Boiling water

• Melting ice

• Photosynthesis in plants

• Burning of wood

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

When a chemical reaction releases heat, is it exothermic or endothermic?

• endothermic

• hotthermic

• heatothermic

• exothermic

Tags

NGSS.HS-PS1-4

Burning of wood is an example of which type of reaction?

• Exothermic reaction

• Combustion reaction

• Endothermic reaction

• Neutralization reaction

What type of reaction absorbs heat from the surroundings?

• Combustion reaction

• Hydrolysis reaction

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.HS-PS1-4

When ice melts, is it an example of an exothermic or endothermic reaction?

• Exothermic

• Endothermic

• Depends on the temperature

• Neither exothermic nor endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to the temperature of the surroundings in an exothermic reaction?

• Becomes solid

• Stays the same

• Decreases

• Increases

Tags

NGSS.HS-PS3-4

What type of reaction is photosynthesis?

• Oxidation

• Combustion

• Exothermic

• Endothermic

Tags

NGSS.HS-PS1-4

When a reaction feels cold to the touch, is it exothermic or endothermic?

• Exothermic

• Endothermic

• Hotthermic

• Thermic

Tags

NGSS.HS-PS1-4

What type of reaction is cooking an egg?

• Exothermic reaction

• Chemical reaction

• Endothermic reaction

• Physical reaction

Tags

NGSS.HS-PS3-4

What is the main difference between exothermic and endothermic reactions?

• No difference

• Release of heat energy

• Absorption of light energy

• Change in color

Tags

NGSS.HS-PS1-4