Welcome to the Quiz!

This quiz contains 10 questions from a mix of 1 subtopics.

True or false? Something counts as a 'molecule' when it's made from 2 or more atoms, and those atoms are held together by chemical bonds.

True

False

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1

Diagram showing the structure of an oxygen molecule with two covalently bonded oxygen atoms.

O2 consists of 2 oxygen atoms, covalently bonded together. Does oxygen count as a molecule?

Yes

No

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1

Which of the following are molecules?

(Select all that apply)

N2

He

O2

Cl2

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3

A compound is a substance made from or more different that are chemically together.

two
elements
bonded

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3

Illustration of an oxygen molecule showing two oxygen atoms bonded together.

Oxygen molecules (O2) consist of two oxygen atoms. Is an oxygen molecule a compound?

Yes

No

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1

Is carbon dioxide (CO2) a molecule, a compound, or both?

Molecule

Compound

Both

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1

How many oxygen atoms are there in 1 molecule of H2SO4?

1
2
3

4

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1

What is the definition of a mixture?

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2

Is the air all around us a compound or a mixture?

Compound

Mixture

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1

Is seawater a compound or a mixture?

Compound

Mixture

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1