Chemical Reactions
Flashcard
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is evidence of a chemical reaction?
Back
Evidence of a chemical reaction is anything that shows a new substance has formed.
2.
FLASHCARD QUESTION
Front
What indicates a new substance has formed when mixing two clear liquids?
Back
A yellow solid forms and then settles to the bottom of the beaker.
3.
FLASHCARD QUESTION
Front
What happens to the temperature of a solution when hydrogen peroxide breaks down?
Back
The temperature of the solution increases.
4.
FLASHCARD QUESTION
Front
What does the Law of Conservation of Mass state?
Back
Mass is never created or destroyed.
5.
FLASHCARD QUESTION
Front
In the reaction 2Mg + O2 -> 2MgO, what are the reactants?
Back
Mg and O.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process that leads to the transformation of one set of chemical substances to another.
7.
FLASHCARD QUESTION
Front
What are products in a chemical reaction?
Back
The substances that are formed as a result of a chemical reaction.
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