Matter can not be created nor destroyed: it can only be
Law of Conservation of Mass

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•
Science
•
7th - 8th Grade
•
Hard
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20 questions
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1.
FLASHCARD QUESTION
Front
Back
Transformed, changed
2.
FLASHCARD QUESTION
Front
The number to the lower side of an element is a
Back
Subscript
3.
FLASHCARD QUESTION
Front
The number in front of a compound or element is a
Back
Coefficient
4.
FLASHCARD QUESTION
Front
When is a chemical reaction balanced?
Back
Both sides have the same number of atoms
5.
FLASHCARD QUESTION
Front
If reaction starts with 20g of reactants it should produce
Back
a total of 20g of products
6.
FLASHCARD QUESTION
Front
When sodium and chlorine combine to form sodium chloride, sodium chloride is the: Originator, Reactant, Product, Produce
Back
Product
7.
FLASHCARD QUESTION
Front
How many Ca (Calcium) atoms are found in Ca(OH)2?
Back
1 atom
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