3.1 Law of Conservation of Mass HW
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Law of Conservation of Mass?
Back
The Law of Conservation of Mass states that in a closed system, the mass of the reactants before a chemical reaction is equal to the mass of the products after the reaction.
2.
FLASHCARD QUESTION
Front
What does a closed system mean in chemistry?
Back
A closed system is one where matter cannot enter or leave, but energy can be exchanged with the surroundings.
3.
FLASHCARD QUESTION
Front
What does an open system mean in chemistry?
Back
An open system is one where both matter and energy can flow freely in and out.
4.
FLASHCARD QUESTION
Front
In a chemical reaction, if the reactants weigh 50 grams, what will the products weigh?
Back
50 grams, according to the Law of Conservation of Mass.
5.
FLASHCARD QUESTION
Front
If 25 grams of salt is dissolved in 1,000 grams of water, what is the total mass of the solution?
Back
1,025 grams.
6.
FLASHCARD QUESTION
Front
What happens to the mass of reactants during a chemical reaction?
Back
The mass of the reactants remains the same as the mass of the products after the reaction.
7.
FLASHCARD QUESTION
Front
In the reaction AB -> A + B, if AB has a mass of 12g and B has a mass of 5g, what is the mass of A?
Back
7 grams.
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