Understanding Chemical Reactions
Flashcard
•
Science
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Each substance written to the LEFT of the arrow in a chemical equation is a ____.
Back
reactant
2.
FLASHCARD QUESTION
Front
What are the reactants in the equation 2H₂O₂ ---> 2H₂O + O₂?
Back
hydrogen peroxide (2H₂O₂)
3.
FLASHCARD QUESTION
Front
Which of the following is certain proof a chemical reaction has occurred? (bubbles, examining the properties of the matter, color, all of these)
Back
examining the properties of the matter
4.
FLASHCARD QUESTION
Front
A change in _____ is a sign of ENERGY being used in a chemical reaction.
Back
temperature
5.
FLASHCARD QUESTION
Front
If the arrangement of atoms in a substance changes, then which of the following is true? (A chemical reaction has occurred, The physical state of the substance changes, The chemical properties of the substance stay the same but the physical properties change)
Back
A chemical reaction has occurred.
6.
FLASHCARD QUESTION
Front
What is a chemical reaction?
Back
A process where reactants transform into products, involving the rearrangement of atoms.
7.
FLASHCARD QUESTION
Front
What are products in a chemical reaction?
Back
Substances formed as a result of a chemical reaction, written to the RIGHT of the arrow.
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