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Pure substances and Mixtures

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(17)
In this section students will be able to identify the characteristics of pure substances and the differences between mixtures.

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Recommended age: 15 years old
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Pure substances and MixturesOnline version

In this section students will be able to identify the characteristics of pure substances and the differences between mixtures.

by Alejandra Henriquez
1

Anything that has mass and takes up space

2

Every sample of a pure substance is either an element, a compound, or a

3

Type of pure substance that cannot be separated into simpler substance by physical means

4

The smallest unit of an element that keeps the element's chemical properties is a(n)

5

Each_________ of a compound contains two or more elements that are chemically combined

6

A sample of matter, either a single element or a single compound that has a definite chemical and physical property is classified as

7

Combination of two or more substances that are not chemically combined

8

Which of the following is a mxture?

9

If you add oil to water and shake the liquid you will form a

10

The label on a bottle states "Shake well before using it". The medicine is probably a

11

Which of the following is a solid dissolved in a solid

12

In a solution, the substance in which the solute dissolves

Written answer

13

Example of liquid solution that contains no water

Written answer

14

The process of pouring a less dense liquid off a denser liquid is called

Written answer

15

Classify the following as homogenous or heterogenous mixtures a. orange juice with pulp b. sweat c. cinnamon sugar d. concrete

Written answer

16

Classify the following as element or compound a. sulfur b. carbon dioxide c. alcohol d. iron

Written answer

17

23000 mg of lead are mixed with 500 grams of water. Find the percentage of lead in this solution.

Written answer

18

List 5 different ways to separate mixtures and give a brief description of each

Written answer

19

Watch the following video. At the end of this process, can we say that water has been separated from other substances just by physical means or chemical means heve been used as well?. Explain

Written answer

20

Explain why an alloy is a type of solution. Why are alloys sometimes used instead of pure metals?

Written answer

Feedback

Matter can be separated, but not all matter canbe separated physically

mixtures can be calssified as homogenous and heterogenous

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