What is the Law of Conservation of Mass?
5.P.2.2 Flashcard (Conservation of Mass)

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Science
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5th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Law of Conservation of Mass states that mass cannot be created or destroyed in a chemical reaction. The total mass of reactants equals the total mass of products.
2.
FLASHCARD QUESTION
Front
What happens to the mass of a balloon when it is warmed?
Back
The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
3.
FLASHCARD QUESTION
Front
If a solid object is melted, what happens to its mass?
Back
The mass remains the same because the object does not gain or lose mass just because it was melted.
4.
FLASHCARD QUESTION
Front
What is the mass of a solution made by dissolving 0.25 grams of baking soda in 5 grams of water?
Back
The mass of the solution is 5.25 grams.
5.
FLASHCARD QUESTION
Front
What happens to the weight of a glass of tea and ice after sitting in the sun?
Back
The weight will be less than 200 g because some of the liquid will evaporate into the atmosphere.
6.
FLASHCARD QUESTION
Front
If you start with 20 grams of reactants, how much product will you have?
Back
You will have a total of 20 grams of products.
7.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Melting ice is a physical change; the mass remains the same before and after melting.
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