Chemical Reactions review spring 2024
Flashcard
•
Science
•
7th - 8th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a common sign that a chemical change has occurred?
Back
A chemical has turned a different color, bubbled, and/or changed temperature.
2.
FLASHCARD QUESTION
Front
How does a chemical change differ from a physical change?
Back
In a chemical change, a new substance is formed, while in a physical change, no new substance is formed.
3.
FLASHCARD QUESTION
Front
What does it mean for a chemical equation to be balanced?
Back
There must be an equal amount of atoms on both sides of the equation.
4.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
Digesting your food.
5.
FLASHCARD QUESTION
Front
What is a physical change?
Back
A change that does not alter the chemical composition of a substance.
6.
FLASHCARD QUESTION
Front
What happens to the atoms in a chemical reaction?
Back
Atoms are rearranged to form new substances.
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
Mass is neither created nor destroyed in a chemical reaction.
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