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Chemical and Physical changes

Chemical and Physical changes

Assessment

Presentation

•

Chemistry

•

10th - 12th Grade

•

Practice Problem

•

Medium

•
NGSS
HS-PS1-4, MS-PS1-2, MS-PS1-4

+6

Standards-aligned

Created by

Monica McClure

Used 30+ times

FREE Resource

20 Slides • 20 Questions

1

Chemical and Physical changes

What's the difference?

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2

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3

Multiple Choice

Which example best describes a physical change?

1

iron rusting

2

charcoal burning

3

an ice cube melting

4

a marshmallow burning

4

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5

Multiple Choice

Phase change from a solid to a gas.

1

sublimation

2

deposition

3

condensation

4

evaporation

6

Multiple Choice

Question image

Which of the following is represented by point 3 on the graph above.

1

Gas heating

2

Sublimation

3

Liquid Heating

4

Evaporation

7

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8

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9

Multiple Choice

Color change like in a drop of food coloring in water, is a _________ change.

1

physical

2

chemical

10

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11

Multiple Choice

A physical change _____________ the identity of the substance.

1

changes

2

maintains

12

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13

Multiple Choice

Which process is a sign of a chemical change?

1

A rotting potato gives off a bad smell

2

A melting block of ice leaves a large puddle

3

A cloud quickly changes shape when blown by wind

4

A plaster statue breaks when it falls onto the floor

14

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15

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16

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17

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18

Multiple Choice

Which of the following is an example of synthesis?

1

Na + Br2 --> NaBr

2

KClO3 --> KCl + O2

3

HgO + Cl2-->HgCl + O2

4

Cl2 + NaBr --> NaCl + Br2

19

Multiple Choice

4Si + S8 --> 2Si2S4

1

Synthesis

2

Decomposition

3

Single Displacement

4

Double Displacement

20

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21

Multiple Choice

Which of the following is an example of a decomposition reaction?

1

2NaF ⟶ 2 Na + F2

2

P2O5 + 3 H2O ⟶ 2H3PO4

3

2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2

4

C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O

22

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23

Multiple Choice

When Rihanna broke up with Chris Brown and then got with Drake who what represents the Single replacement reaction?

1

Drake+ Chris Rihanna---> Rihanna Drake + Chris

2

Drake+ Rihanna Brown---> Drake Riahnna Brown

3

Drake+ Rihanna Brown---> Chris Drake + Rihanna

4

I have no idea

24

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25

Multiple Choice

Predict the products of this reaction: Al2(SO4)3 + Ca3(PO4)2 --->

1

This reaction will not occur

2

Al(PO4) + Ca(SO4)

3

Al2Ca3 + (PO4)2(SO4)3

4

Al2(SO4)3 + Ca3(SO4)3

26

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27

Multiple Choice

Propane is burned with a blue flame

1

propane + oxygen --> carbon dioxide + water

2

propane + carbon dioxide --> oxygen + water

3

propane + oxygen --> carbon monoxide + water

28

Multiple Choice

All combustion reactions are

1

endothermic

2

exothermic

3

neutral

4

fast

29

Multiple Choice

Another term for burning is

1

Fire triangle

2

Magnesium oxide

3

Combustion

4

Bustion

30

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31

Multiple Choice

Question image

Milk turning sour is a _____.

1

physical change

2

chemical change

32

Multiple Choice

Question image

In a chemical change, how does the mass of the reactants compare to the mass of the products?

1

The mass of the products is always greater than the mass of the reactants.

2

The mass of the reactants is always greater than the mass of the products.

3

The mass of the reactants is always equal to the mass of the products.

4

It depends on the specific chemical change.

33

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34

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35

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36

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37

Multiple Choice

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Is respiration an Endothermic or an Exothermic reaction?

1

Endothermic

2

Exothermic

38

Multiple Choice

Question image

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is true?

1

The temperature changed

2

It is an endothermic reaction

3

It is an exothermic reaction

4

Two of the answers are correct

39

Multiple Choice

In an endothermic reaction, heat is ...

1

taken in

2

given out

40

Multiple Choice

In an exothermic reaction, heat is ...

1

taken in

2

given out

Chemical and Physical changes

What's the difference?

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