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Chemical and Physical Changes- with examples

Chemical and Physical Changes- with examples

Assessment

Presentation

Science

7th Grade

Practice Problem

Easy

Created by

Heather Hinshaw-Chalker

Used 1+ times

FREE Resource

16 Slides • 21 Questions

1

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2

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3

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Multiple Choice

What happens to particles during a physical change?

1

New substances are formed

2

Particles disappear

3

Particles just move around

4

Particles change color

6

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7

Multiple Choice

Based on the diagrams in slides 1 and 2, what is a common characteristic of physical changes such as cutting and dissolving?

1

They always involve heat

2

They create new substances

3

Particles just move around without forming new substances

4

They change the color of the substance

8

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9

Open Ended

Explain how matter changes during a physical change, using examples from the slides.

10

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11

Fill in the Blank

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13

Multiple Select

Which of the following are examples of physical changes?

1

Burning wood

2

Melting ice

3

Dissolving sugar in water

4

Rusting iron

14

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15

Open Ended

Describe a situation where a physical change can be reversed, as explained in the slides.

16

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17

Multiple Choice

Which of the following is NOT an example of a chemical change?

1

Burning wood

2

Rusting iron

3

Melting ice

4

Milk going sour

18

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19

Open Ended

What are the four common outcomes of all chemical changes?

20

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21

Multiple Select

Based on the diagrams, which statements are true about the formation of water from hydrogen and oxygen?

1

Water is a new substance.

2

Water has the same properties as hydrogen and oxygen.

3

New chemical bonds have formed between oxygen and hydrogen atoms.

4

Water has a new composition.

22

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23

Multiple Choice

During a chemical change, what happens to the particles?

1

They disappear completely.

2

They change or rearrange to form new substances.

3

They remain exactly the same.

4

They split into smaller pieces.

24

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25

Fill in the Blank

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27

Open Ended

Explain why water has different properties from hydrogen and oxygen, even though it is made from these two elements.

28

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29

Multiple Choice

Which of the following is NOT an evidence of a chemical change?

1

Fizzing

2

Burning

3

Melting

4

Corrosion

30

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31

Fill in the Blank

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Fill in the Blank

33

Multiple Select

Which of the following are examples of chemical changes?

1

Soured milk

2

Effervescent tablets bubbling

3

Cutting paper

4

Logs burning

34

Multiple Choice

Is crushing an aspirin a chemical change or a physical change?

1

Chemical Change

2

Physical Change

3

Both

4

Neither

35

Fill in the Blank

36

Multiple Select

Which of the following examples represent a chemical change?

1

Crushing an aspirin

2

Metal rusting

3

An egg rotting

4

An egg breaking

37

Multiple Choice

What is the main difference between a physical change and a chemical change?

1

A physical change alters the composition of a substance, while a chemical change does not.

2

A chemical change alters the composition of a substance, while a physical change does not.

3

Both physical and chemical changes alter the composition of a substance.

4

Neither physical nor chemical changes alter the composition of a substance.

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