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Quiz: Endothermic and Exothermic Rxns

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Last updated about 7 years ago
20 questions
Note from the author:
Properties (descriptions) of endothermic and exothermic reactions.
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Question 1
1.

Chemical reactions don't need energy to break apart bonds.

Question 2
2.

In a chemical reactions new bonds form to make the products.

Question 3
3.

Energy cannot be created nor destroyed.

For the following questions choose whether or not the desription goes with endothermic reactions (A) or exothermic reactions (B).
Question 4
4.

More energy is released by products than is needed to break bonds.

Question 5
5.

Products have less energy than the reactants.

Question 6
6.

It literally means "taking in heat."

Question 7
7.

Energy is needed to keep the reaction going.

Question 8
8.

Reactions feel hot to us.

Question 9
9.

An example is baking soda and vinegar.

Question 10
10.

Reaction feels cold.

Question 11
11.

Wood burning is an example.

Question 12
12.

Products have more energy than the reactants.

Question 13
13.

Heat is absorbed.

Question 14
14.

Photosynthesis is an example.

Question 15
15.

Combustion reactions are examples.

Question 16
16.

This equation: Reactants→Products+Energy

Question 17
17.

Is the graph above respresentative of an endothermic or exothermic reaction?

Question 18
18.

From where does the energy for photosynthesis come?

Question 19
19.

During the photosynthesis reaction plants convert carbon dioxide and water to

Question 20
20.

The energy needed to start reactions is called