5P22 Matter: Law of Conservation of Mass
Flashcard
•
Science
•
5th 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 mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants equals the total mass of the products.
2.
FLASHCARD QUESTION
Front
If you add 10 grams of water to 5 grams of salt, what is the total mass of the salt water?
Back
15 grams
3.
FLASHCARD QUESTION
Front
What happens to the mass of a solution when a solute is dissolved in a solvent?
Back
The mass of the solution is equal to the mass of the solute plus the mass of the solvent.
4.
FLASHCARD QUESTION
Front
If 15 grams of sugar are dissolved in 300 grams of water, what is the mass of the mixture?
Back
315 grams
5.
FLASHCARD QUESTION
Front
What is an example of a physical change?
Back
Dissolving sugar in water is a physical change because the sugar can be recovered by evaporating the water.
6.
FLASHCARD QUESTION
Front
What is an example of a chemical change?
Back
Burning wood is a chemical change because it produces new substances (ash, smoke) and the mass changes.
7.
FLASHCARD QUESTION
Front
If a rock weighing 60 grams is broken into two pieces, what can be said about the total mass of the pieces?
Back
The total mass of the two pieces will still be 60 grams.
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