
Exothermic & Endothermic
Presentation
•
Science
•
7th Grade
•
Practice Problem
•
Medium
+2
Standards-aligned
Laura O'Neill
Used 5+ times
FREE Resource
11 Slides • 7 Questions
1
Exothermic & Endothermic Reactions
Lesson 7.1.3
By Laura O'Neill
2
Poll
Have you ever seen a panda bear in person?
YES
NO
3
Exo = means out - like exit
therm - means heat - like thermal underwear
ic - meaning of or belonging to
Exothermic - a chemical reaction that gives off heat
Exothermic
Endo = means inside or into - like
therm - means heat - thermal
ic - meaning related to or belong to
Endothermic - a chemical reaction that takes heat in
Endothermic
4
Multiple Select
Which of the following are signs that a chemical reaction is occurring in the fire?
Use notes from yesterday's lesson for help!
producing light
wood turns black
heat is given off
insects are attracted to the fire
5
Multiple Select
Which example below are examples of a physical change?
cutting a paper in half
burning a piece of paper
melting ice cube
baking a cake
6
Notebook
Remember, Temperature change is an indicator of a chemical change. We will discuss two forms of that change.
7
A chemical reaction that causes the temperature to decrease.
Some examples are:
- mixing baking soda & vinegar
- cooking an egg
- baking
- photosynthesis
Endothermic
8
A chemical reaction that causes the temperature of the substance to increase.
Some examples are:
- Rusting
- Heating Pack
- Nuclear Fission
- Fire burning
Exothermic
9
10
11
Now let's try an Endothermic vs Exothermic Interactivity!
Page 4 in Edio
12
Multiple Choice
Which combination of substances caused the greatest temperature change in the sports pack?
10g iron powder & 10g water
20g iron powder & 10g water
20g iron powder & 20g water
10g iron powder & 20g water
13
Match
Match the type of reaction that occurs.
heat pack
cold pack
baking cookies
exothermic
endothermic
endothermic
exothermic
endothermic
endothermic
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15
16
Multiple Choice
A science teacher was demonstrating elephant toothpaste to their students. They showed how the temperature of the foam was higher in temperature than the original liquids. What type of reaction is this?
Exothermic
Endothermic
17
Draw
Why are cooking chocolate chip cookies endothermic?
18
See You Tomorrow for Chemical Bonds!
Exothermic & Endothermic Reactions
Lesson 7.1.3
By Laura O'Neill
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