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Pure Substances vs. Mixtures

Total questions: 24

Worksheet time: 13mins

Name
Class
Date
1.

Pure Substance or Mixture?

can be homogenous or heterogenous

a)

pure substance

b)

mixture

2.

Pure Substance or Mixture?

made from one type of atom

a)

pure substance

b)

mixture

3.

Pure Substance or Mixture?

can be made from multiple particles that are physically combined

a)

pure substance

b)

mixture

4.

Pure Substance or Mixture?

can be made from multiple elements that are chemically combined

a)

pure substance

b)

mixture

5.

Homogeneous or Heterogeneous?

a mixture that is uniform throughout

a)

homogeneous

b)

heterogeneous

6.

Pure Substance or Mixture?

an element

a)

pure substance

b)

mixture

7.

Pure Substance or Mixture?

a compound

a)

pure substance

b)

mixture

8.

Pure Substance or Mixture?

made from only one type of atom

a)

pure substance

b)

mixture

9.

Pure Substance or Mixture?

Dr. Pepper

a)

pure substance

b)

mixture

10.

Pure Substance or Mixture?

neon

a)

pure substance

b)

mixture

11.

Pure Substance or Mixture?

magnesium (Mg)

a)

pure substance

b)

mixture

12.

Pure Substance or Mixture?

carbon dioxide (CO₂)

a)

pure substance

b)

mixture

13.

Pure Substance or Mixture?

glucose (C₆H₁₂O₆)

a)

pure substance

b)

mixture

14.

Pure Substance or Mixture?

garbage can full of garbage

a)

pure substance

b)

mixture

15.

Pure Substance or Mixture?

salt water

a)

pure substance

b)

mixture

16.

Pure Substance or Mixture?

mercury (Hg)

a)

pure substance

b)

mixture

17.

Students make lists of characteristics that describe an isotope of carbon (C). Which list is CORRECT?

a)

It is a pure substance because all the atoms have the same number of protons and properties.

b)

It is a pure substance because all the atoms have different numbers of protons and properties.

c)

It is a mixture because all the atoms have the same number of protons and properties.

d)

It is mixture because all the atoms have different numbers of protons and properties.

18.

Pure Substance or Mixture?

wood

a)

pure substance

b)

mixture

19.

Pure Substance or Mixture?

humans

a)

pure substance

b)

mixture

20.

Which statement BEST classifies air?

a)

Air is a pure substance because it is composed of pure substances.

b)

Air is a pure substance because its properties rarely change.

c)

Air is a mixture because is has the same properties all of the time.

d)

Air is a mixture because its composition varies.

21.

Homogeneous or Heterogeneous?

a mixture that individual parts can be seen

a)

homogeneous

b)

heterogeneous

22.

Homogeneous or Heterogeneous?

Koolaid that has been added to the container but not stirred

a)

homogeneous

b)

heterogeneous

23.

Pure Substance or Mixture?

solution

a)

pure substance

b)

mixture

24.

Homogeneous or Heterogeneous?

tap water

a)

homogeneous

b)

heterogeneous