Intro to Chemical Reactions
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process in which atoms rearrange to form new substances.
2.
FLASHCARD QUESTION
Front
How many atoms are in 2CaCO3?
Back
10
3.
FLASHCARD QUESTION
Front
What are the products in the reaction: 4Al + 3O2 -> 2Al2O3?
Back
Al2O3
4.
FLASHCARD QUESTION
Front
How many Oxygen (O) atoms are in 2C2H8Cl2?
Back
16
5.
FLASHCARD QUESTION
Front
What does the symbol (aq) represent in a chemical equation?
Back
A substance dissolved in water.
6.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, mass is neither created nor destroyed.
7.
FLASHCARD QUESTION
Front
What is a reactant?
Back
A substance that undergoes change in a chemical reaction.
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