Reaction Energy: Endothermic & Exothermic Reactions

Which type of reaction requires energy input, and often a requires a constant energy source?

• endothermic

• exothermic

• neither

• both

Tags

NGSS.HS-PS1-4

If a chemical reaction is EXOTHERMIC, the temperature would....

• stay the same.

• increase.

• decrease.

Tags

NGSS.HS-PS1-4

In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.HS-PS1-4

During an endothermic reaction that is occuring in a beaker if iy were part of the surroundings and touched the beaker, it would feel _______.

• warm

• cold

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

• The reaction was endothermic.

• The reaction was exothermic.

• It is impossible to determine from the data.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Baking bread and cooking an egg are examples of....?

• endothermic processes.

• exothermic processes.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Is photosenthysis an Exothermic or an Endothermic reaction?

• Endothermic
• Exothermic

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What type of reaction occurs in a hand warmer?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

In an endothermic reaction, energy is _________.

• absorbed.

• released.

• created.

• destroyed.

Tags

NGSS.HS-PS1-4

When a candle is lit hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being _________________ .

• absorbed.

• frozen.

• destroyed.

• released.

Tags

NGSS.HS-PS1-4