Pure Substances & Mixtures

1. What is a pure substance?

• • A) A substance made of only one type of material.

• • B) A substance that has many different things mixed together.

• • C) A substance that changes color.

2. Which of these is a pure substance?

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3. What is a mixture?

• • B) A combination of two or more substances.

• • C) A solid that melts.

• • A) Something made of only one material.

4. Which of these is a mixture?

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5. In a homogeneous mixture, can you see the different parts?

• • A) Yes

• • B) No

6. Which of these is a homogeneous mixture?

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7. In a heterogeneous mixture, can you see the different parts?

• • A) Yes

• • B) No

8. Which of these is a heterogeneous mixture?

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9. What happens when you mix water and sugar?

• • A) The sugar dissolves, and you cannot see it.

• • B) The sugar stays at the bottom.

• • C) The water changes color.

10. Why is cereal with milk a heterogeneous mixture?

• • A) Because you can still see the cereal and the milk.

• • B) Because the cereal disappears.

• • C) Because they mix together completely.