Chemical Reactions and Energy Changes

Chemical Reactions and Energy Changes

Assessment

Interactive Video

Chemistry, Biology, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers chemical change graphs, focusing on endothermic and exothermic reactions. It explains photosynthesis as an endothermic process and cellular respiration as exothermic. The tutorial details how to graph these reactions, calculate energy changes, and the role of activation energy. It also discusses how catalysts lower activation energy, facilitating reactions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of chemical change graphs?

Physical changes in matter

Chemical reactions and energy changes

The structure of atoms

The periodic table

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which process in plants is an example of an endothermic reaction?

Fermentation

Photosynthesis

Cellular respiration

Combustion

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of reaction is cellular respiration?

Neutral

Endothermic

Exothermic

Reversible

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an endothermic reaction graph, what does a positive slope indicate?

Energy is being released

Energy is constant

Energy is being absorbed

No energy change

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is activation energy?

The energy at the end of a reaction

The energy released during a reaction

The energy required to start a reaction

The energy that remains constant

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the law of conservation of energy apply to exothermic reactions?

Energy is not involved

Energy is transferred equally

Energy is destroyed

Energy is created

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an exothermic reaction graph, what does a negative slope indicate?

Energy is being absorbed

Energy is being released

No energy change

Energy is constant

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