Reactions and Energy Quiz

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 temperature changed 
• It is an endothermic reaction
• It is an exothermic reaction 
• Two of the answers are correct 

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 processess
• None of these 

Tags

NGSS.MS-PS1-4

NGSS.MS-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 is shown in the photo?

• Exothermic
• Isothermic
• Endothermic
• None of the  above

Tags

NGSS.HS-PS1-4

What type of reaction occurs in a hand warmer?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

____ reactions usually feel cold.

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

A lizard egg needs a temperature of 26-30 ° C to hatch properly. You place it next to a pouch of water which is 22 °C. What type of chemical do you need for the egg?

• Calcium chloride because it will be endothermic.

• Calcium chloride because it will be exothermic.

• Sodium bicarbonate and acetic acid because it will be exothermic.

• Sodium bicarbonate and acetic acid because it will be endothermic.

In an endothermic reaction, heat is ...

• taken in or absorbed
• given out or released 

Tags

NGSS.HS-PS1-4

Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. Why do you think that is?

• It is an exothermic reaction
• It is an endothermic reaction
• It is made of ice
• It is dissolving your mouth

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of reaction occurs in a hand warmer

• exothermic

• endothermic