
Module 7 Chemistry Test Review
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Medium
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
Changes in pressure will only affect substances that are in the ______ state.
Back
gas
2.
FLASHCARD QUESTION
Front
When the rate of the forward reaction is equal to the rate of the backward reaction, the system is said to be in _____
Back
Chemical Equilibrium
3.
FLASHCARD QUESTION
Front
In a laboratory, a student combines vinegar and baking soda into a beaker. The initial temperature is 28 degrees Celsius and the final temperature reading two minutes later is 20 degrees Celsius. Is this an endothermic or an exothermic reaction?
Back
endothermic reaction
4.
FLASHCARD QUESTION
Front
When an _____ reaction occurs, the reactants are at a lower energy.
Back
endothermic
5.
FLASHCARD QUESTION
Front
A ______________ is a substance that increases the rate of a reaction without being used up during the reaction.
Back
catalyst
6.
FLASHCARD QUESTION
Front
What is the definition of an endothermic reaction?
Back
A reaction that absorbs heat from its surroundings.
7.
FLASHCARD QUESTION
Front
What is the definition of an exothermic reaction?
Back
A reaction that releases heat to its surroundings.
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