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Endothermic and Exothermic Reactions plus reaction rates

Endothermic and Exothermic Reactions plus reaction rates

Assessment

Presentation

Chemistry

6th - 8th Grade

Practice Problem

Easy

NGSS
HS-PS1-4, HS-PS1-5, MS-PS1-2

+5

Standards-aligned

Created by

Jennifer Dolph

Used 94+ times

FREE Resource

8 Slides • 22 Questions

1

Endothermic & Exothermic Reactions

including reaction rates

Slide image

2

Multiple Choice

First lets review!!

What are some signes that a chemical reaction has taken place?

1

change in shape

2

bubbles of gas appear

3

melting

4

dissolving

3

Multiple Choice

After you combine two substance together, a news substance forms. This is an example of :

1

physical change

2

chemical change

4

Endothermic Reaction

  • energy is absorbed

  • endo means absorbed or enter

  • usually feel cool

Slide image

5

Multiple Choice

In an endothermic reaction, energy is

1

absorbed

2

released

6

Multiple Choice

If a chemical reaction is ENDOTHERMIC, the temperature would...

1

stay the same

2

increase

3

decrease

7

Exothermic Reaction

  • energy is released

  • exo means exit or released

  • usually feels hot

Slide image

8

Multiple Choice

In an exothermic reaction, energy is

1

absorbed

2

released

9

Multiple Choice

If a chemical reaction is EXOTHERMIC, the temperature would...

1

stay the same

2

increase

3

decrease

10

Heat

  • Exothermic reaction heat moves out of system

  • Endothermic reaction heat move into a system


Slide image

11

Multiple Choice

What instrument would you use to detect an endothermic or exothermic reaction?

1

triple beam balance

2

ruler

3

thermometer

4

barometer

12

Multiple Choice

Question image

_____ reactions usually feel cool

1

endothermic reaction

2

exothermic reaction

13

Multiple Choice

Surrounding temperature gets warmer

1

endothermic

2

exothermic

14

Multiple Choice

Question image

Photosynthesis

1

endothermic

2

exothermic

15

Multiple Choice

The initial temperature was measured to be 20oC and the final temperature was 45oC. The reaction was

1

endothermic

2

exothermic

16

Multiple Choice

Question image

Rocket launch

1

endothermic

2

exothermic

17

Multiple Choice

The initial temperature was measured to be 20oC and the final temperature was 10oC. The reaction was

1

endothermic

2

exothermic

18

Multiple Select

Which of the following are examples of an Endothermic Reaction?

1

Baking a cake

2

Candles burning

3

water evaporting

4

water freezing

19

Multiple Select

Which of the following are examples of an Exothermic Reaction?

1

Baking a cake

2

Candles burning

3

water evaporating

4

water freezing

20

Take a look at this graph.

You will be asked to explain it on the next slide.

Slide image

21

Open Ended

Question image

What type of reaction is this and how do you know?

22

Take a look at this graph

You will be asked to explain it on the next slide.

Slide image

23

Open Ended

Question image

What is this graph showing? How do you know?

24

Reaction Rate

  • the SPEED at which reactants are converted into products in a reaction

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25

Open Ended

How would you measure the rate of a reaction?

26

Multiple Choice

In order to determine the rate of a reaction would you measure the reactions

1

temperature

2

mass of the product over time

27

Rates of Rection

  • concentration

  • pressure

  • surface area

  • temperature

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28

Multiple Choice

Catalyst is the opposite of an inhibitor... a catalyst will

1

speed up a reaction

2

slow down a reaction

29

Open Ended

Question image

We want to make elephant toothpaste, which is an exothermic reaction because heat is released... How can we create the biggest reaction?

30

Poll

How do you feel about endothermic and exothermic reaction and the rates of reactions?

5

4

3

2

1

Endothermic & Exothermic Reactions

including reaction rates

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