PS.3D Modeling Conservation of Mass

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•
Science
•
8th Grade
•
Hard
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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 reactants equals the total mass of products.
2.
FLASHCARD QUESTION
Front
What is a reactant?
Back
A reactant is a substance that undergoes a chemical change in a reaction.
3.
FLASHCARD QUESTION
Front
What is a product?
Back
A product is a substance produced during a chemical reaction.
4.
FLASHCARD QUESTION
Front
How many hydrogen atoms are in the product of the reaction: 2SO2 + 2H2O2 -> 2H2SO4?
Back
There are 4 hydrogen atoms in the product.
5.
FLASHCARD QUESTION
Front
If 200 g of water freezes, what will be the mass of the frozen water?
Back
The mass of the frozen water will be 200 g.
6.
FLASHCARD QUESTION
Front
What is the chemical formula for sodium chloride?
Back
The chemical formula for sodium chloride is NaCl.
7.
FLASHCARD QUESTION
Front
What happens to the mass of substances during a chemical reaction?
Back
The mass of substances remains constant; it is conserved.
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