Eoc Review Endothermic vs Exothermic

In an exothermic reaction, energy is ...

• taken in
• given off

Tags

NGSS.HS-PS1-4

In an endothermic reaction, energy is...

• taken in
• given out

Tags

NGSS.HS-PS1-4

What type of reaction occurs in a hand warmer?

• exothermic
• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

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

• Stay the same
• Increase
• Decrease

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

TRUE OR FALSE: In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.HS-PS1-4

During an endothermic reaction in a beaker, if we touched the beaker it would feel _______. 

• Warm
• Cold

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

A chemical reaction that requires energy is a

• exothermic reaction 
• endothermic reaction 
• over reaction 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

During a science experiment students combine two substances in a plastic bag.  The bag becomes warm & expands.  What is the most likely reason the bag became warm?

• The substances chemically reacted and absorbed energy.
• The substances chemically reacted and released energy.
• The substances physically reacted and released energy.
• The substances physically reacted and changed the plastic bag.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

The equations in the image show several chemical reactions.  Which statement is true about the energy in these reactions?

• The reactions are endothermic because they absorb heat.
• The reactions are endothermic because "heat"is part of the product.
• The reactions are exothermic because they release heat.
• The reactions are exothermic because "heat" is part of the reactants.

Tags

NGSS.HS-PS1-4

Plants take in light energy during photosynthesis as show in the diagram.  Which statement is true about photosynthesis?

• Photosynthesis is endothermic since oxygen is given off.
• Photosynthesis is endothermic since light energy is a reactant.
• Photosynthesis is exothermic because sugar is used for energy.
• Photosynthesis is exothermic because energy is released.

Tags

NGSS.HS-LS1-5