Law of Conservation of Mass/Counting Atoms

Flashcard
•
Science
•
8th Grade
•
Hard
+4
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of a chemical equation?
Back
A chemical equation uses chemical symbols and numbers to describe what happens in a chemical reaction.
Tags
NGSS.MS-PS1-1
2.
FLASHCARD QUESTION
Front
What does the Law of Conservation of Mass state?
Back
The Law of Conservation of Mass states that matter cannot be created nor destroyed during chemical reactions.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
FLASHCARD QUESTION
Front
What is the chemical formula for water?
Back
The chemical formula for water is H₂O.
Tags
NGSS.MS-PS1-1
4.
FLASHCARD QUESTION
Front
How many oxygen atoms are present in the product side of a balanced chemical equation if the answer is 18?
Back
There are 18 oxygen atoms on the product side.
Tags
NGSS.MS-PS1-5
5.
FLASHCARD QUESTION
Front
What is photosynthesis?
Back
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
6.
FLASHCARD QUESTION
Front
What is the role of coefficients in a chemical equation?
Back
Coefficients indicate the number of molecules or moles of a substance involved in a chemical reaction.
7.
FLASHCARD QUESTION
Front
What is a reactant in a chemical reaction?
Back
A reactant is a substance that undergoes change during a chemical reaction.
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