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QUIZ #17: Chemical Reactions (2/26/2025)
By Gene Murray
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Last updated about 1 year ago
12 questions
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Use your notes from class. Best of luck!
Question 1
1.
Which of the following are signs that a chemical reaction has occurred? (Select all that apply)
Color change
Temperature change
Production of gas
Dissolving in water
Question 2
2.
What are the substances called that you start with in a chemical reaction?
Products
Reactants
Catalysts
Inhibitors
Question 3
3.
What kind of reaction absorbs heat from its surroundings?
Chemical reaction
Physical change
Exothermic reaction
Endothermic reaction
Question 4
4.
What do we call substances formed after a chemical reaction?
Products
Endothermic substances
Catalysts
Reactants
Question 5
5.
What type of reaction releases energy in the form of heat?
Exothermic reaction
Light reaction
Endothermic reaction
Chemical change
Question 6
6.
What type of reaction is photosynthesis?
Endothermic reaction that absorbs energy.
A physical change with no energy change.
A combustion reaction with fire.
Exothermic reaction that releases energy.
Question 7
7.
Which process releases energy as heat or light?
Chemical equilibrium process of plants.
Nuclear reaction in sunlight.
Exothermic reaction like fire.
Endothermic reaction like photosynthesis.
Question 8
8.
A
B
C
D
Question 9
9.
A
B
C
D
Question 10
10.
What gases are produced when fuels burn?
Nitrogen gas
Oxygen gas
Water vapor
Carbon dioxide
Question 11
11.
What is needed for combustion to occur?
Oxygen
Hydrogen gas
Fuel
Carbon dioxide
Question 12
12.
What is a byproduct of burning fuels?
Soot
Heat
Light
Nitrogen