What does the Law of Conservation of Matter state?
Review- Law of Conservation of Matter

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Law of Conservation of Matter states that matter cannot be created or destroyed in a chemical reaction; the mass of the reactants equals the mass of the products.
2.
FLASHCARD QUESTION
Front
In a chemical reaction, if the mass of the products is 20 grams, what is the mass of the reactants?
Back
20 grams.
3.
FLASHCARD QUESTION
Front
What is a reactant in a chemical reaction?
Back
A reactant is a substance that undergoes change during a chemical reaction.
4.
FLASHCARD QUESTION
Front
If a reaction has reactants A and B, what are the products if the reaction is A + B -> C?
Back
The product is C.
5.
FLASHCARD QUESTION
Front
If the mass of reactant AB is 12 grams and product B is 5 grams, how much should product A weigh?
Back
7 grams.
6.
FLASHCARD QUESTION
Front
What is the relationship between reactants and products in a closed system?
Back
In a closed system, the total mass of reactants equals the total mass of products.
7.
FLASHCARD QUESTION
Front
What happens to the mass of reactants during a chemical reaction?
Back
The mass of reactants remains the same; it is transformed into products.
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