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Combustion Reactions

Authored by Lisa Thompson

Science

9th Grade

NGSS covered

Combustion Reactions
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the main difference between complete and incomplete combustion?

Complete combustion requires a catalyst.

Incomplete combustion produces more energy.

Complete combustion produces carbon dioxide, while incomplete combustion produces carbon monoxide.

Incomplete combustion requires more oxygen.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the role of oxygen in a combustion reaction?

It acts as a fuel.

It acts as a reducing agent.

It acts as an oxidising agent.

It acts as a catalyst.

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements is true about the energy changes in combustion?

Energy is absorbed from the surroundings.

Energy is released to the surroundings.

Energy remains constant.

Energy is converted into mass.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the context of combustion, what does the term "oxidation" refer to?

Loss of oxygen.

Gain of hydrogen.

Gain of oxygen.

Loss of carbon.

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Incomplete combustion is harmful to humans because it ___________________.

increases the level of sugar in the blood

produces large amounts of carbon dioxide

decreases the amount of sugar in the blood

produces carbon monoxide that reduces the level of oxygen in the blood

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The word equation for combustion is: fuel + oxygen --> water + ________ __________

Carbon dioxide

Limewater

Tags

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a consequence of incomplete combustion?

Production of carbon dioxide.

Production of carbon monoxide.

Production of water only.

Production of nitrogen gas.

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