Chemical Reactions Quiz
Passage
•
Science
•
8th Grade
•
Practice Problem
•
Hard
KAREN VILLALOBOS
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do chemical reactions form when hydrogen and oxygen react?
Carbon dioxide
Methane
Water
Ammonia
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the substances called that change into new substances during a chemical reaction?
Products
Reactants
Catalysts
Enzymes
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a chemical reaction releasing energy?
Photosynthesis
Rusting of iron
Burning wood
Melting ice
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is one way chemical reactions are important to us?
They help us understand how matter changes and interacts.
They create new elements.
They stop energy from being absorbed.
They prevent rusting.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which process is an example of a chemical reaction that absorbs energy?
Combustion
Photosynthesis
Freezing water
Evaporation
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