Chemistry
Flashcard
•
Chemistry
•
7th - 8th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What should Alex do to find out if a chemical reaction happens when mixing two substances?
Back
Test the solubility before and after mixing.
2.
FLASHCARD QUESTION
Front
What is a product in a chemical reaction?
Back
The ending substance.
3.
FLASHCARD QUESTION
Front
What is a reactant in a chemical reaction?
Back
The starting substance.
4.
FLASHCARD QUESTION
Front
In the reaction: Hydrogen + Oxygen --> Water, identify the reactant(s).
Back
Hydrogen and Oxygen.
5.
FLASHCARD QUESTION
Front
Is burning always a chemical reaction?
Back
True.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process where substances (reactants) are transformed into new substances (products).
7.
FLASHCARD QUESTION
Front
What is the law of conservation of mass?
Back
In a chemical reaction, mass is neither created nor destroyed.
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