Exothermic and Endothermic Changes

Select the change which transfers energy to the surroundings.

• Physical change

• Chemical reaction

• Exothermic change

• Endothermic change

Select the best explanation for why burning a candle is an exothermic change.

• The surroundings are warmed up.

• The surroundings are cooled down.

• The surroundings keep a fixed temperature.

• None of these reasons.

Tags

NGSS.MS-PS1-2

Mr. Leach mixes sodium hydroxide and sulfuric acid. The temperature of the solution increases by 10 degrees. Write down the type of change this is.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Mr. Leach mixes sodium hydroxide and hydrochloric acid. The temperature of the solution decreases by 15 degrees. Write down the type of change this is.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Select the change which transfers energy from the surroundings to the substance.

• Physical change

• Chemical reaction

• Exothermic change

• Endothermic change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

Select the best explanation for why an ice pack uses an endothermic reaction.

• The surroundings around the ice pack warm up when used.

• The surroundings around the ice pack cool down when used.

• The temperature of the surroundings does not change.

• None of these reasons.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Select the example of an exothermic reaction.

• Melting

• Combustion

• Boiling

• Neutralisation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

Select the example of an endothermic reaction.

• Melting

• Combustion

• Condensation

• Freezing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4