Endo and Exo Reactions

In an exothermic reaction, heat is ...

• taken in

• given out

Tags

NGSS.HS-PS1-4

gas --> liquid --> solid is what type of reaction?

• endothermic

• exothermic

• catalytic

• inhibited

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• Endothermic processes

• Exothermic processess

• None of these 

Tags

NGSS.MS-PS1-4

In an exothermic reaction, heat is ...

• taken in or absorbed

• given out or released

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

In an endothermic reaction, heat is ...

• taken in or absorbed

• given out or released 

Tags

NGSS.MS-PS1-4

What type of reaction occurs in an instant hand warmer?

• exothermic

• endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

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

• Stay the same

• Increase

• Decrease

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Alka-seltzer tablets dropped in water feel cool. This is an example of an ___ reaction. 

• Endothermic

• Exothermic

• Dissolving a salt

• Physical change 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

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 temperature changed 

• It is an endothermic reaction

• It is an exothermic reaction 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A lizard egg needs a temperature between 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 to add to the water for the egg to hatch? HINT: Think of the lab you did in class on 1/8. 

• Calcium chloride because it will be endothermic.

• Calcium chloride because it will be exothermic. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3