Exothermic and Endothermic Reactions

True or false: Exothermic reactions mostly absorb energy.

• True

• False

Tags

NGSS.MS-PS3-5

True or false: Exothermic reactions mostly release energy.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

The bag you made in class that felt cold afterwards was an example of an...

• Exothermic chemical reaction

• Endothermic chemical reaction

Tags

NGSS.MS-PS3-4

The energy absorbed by endothermic reactions is used to...

• form chemical bonds between atoms that release a lot of energy when they're formed

• break chemical bonds that require a lot of energy to break

Tags

NGSS.MS-PS3-4

Cooking bacon as it absorbs heat and watching it change color and smell is a good example of an...

• Exothermic chemical reaction

• Endothermic chemical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Endothermic reactions feel...

• Hot

• Cold

Tags

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?

• It is an exothermic reaction

• It is an endothermic reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

HCl reacts with Zn giving off heat

• endothermic

• exothermic

Tags

NGSS.MS-PS1-4

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

NGSS.MS-PS3-5

Which of the following are examples of an Exothermic Reaction?

• Cooking an egg

• Plants making sugar through photosynthesis

• Dynamite exploding

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5