What is a chemical reaction?
Chemical Reactions Review

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Science
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6th - 8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
A process where substances (reactants) transform into new substances (products) with different properties.
2.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, the mass of the reactants equals the mass of the products.
3.
FLASHCARD QUESTION
Front
What happens to the color of the Statue of Liberty over time?
Back
It changed from bronze to green due to a chemical reaction called oxidation.
4.
FLASHCARD QUESTION
Front
What is photosynthesis?
Back
A chemical reaction where plants use sunlight, carbon dioxide, and water to produce sugar and oxygen.
5.
FLASHCARD QUESTION
Front
What is a precipitate?
Back
A solid that forms when two liquids react and combine.
6.
FLASHCARD QUESTION
Front
What is the difference between a physical change and a chemical change?
Back
A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.
7.
FLASHCARD QUESTION
Front
What are reactants in a chemical reaction?
Back
The starting substances that undergo change during a chemical reaction.
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