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Endothermic And Exothermic Reactions
Test Description: Review over the basics of Endothermic and Exothermic Reactions.
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT a sign of a chemical reaction?
A
Precipitate
B
Melting
C
Bubbles
D
Temperature Change
2) In an EXOTHERMIC reaction ____.
A
The surroundings feel cold
B
The temperature does not change
C
The temperature drops
D
The temperature increases
3) More energy from bonds FORMING results in a _____reaction
A
Endothermic
B
Exothermic
4) When heat flows out of the system the reaction is called
A
Exothermic
B
Endothermic
5) In an Endothermic reaction ____.
A
It feels hot
B
Bond are being formed
C
The temperature drops
D
The temperature increases
6) Energy is absorbed during a ____ reaction
A
Exothermic
B
Endothermic
7) More energy from bonds BREAKING results in a ___ reaction
A
Exothermic
B
Endothermic
8) Which is true?
A
Exothermic reactions cause a temperature drop
B
Endothermic reactions get hot
C
Endothermic reactions cause a decrease in temperature
D
Exothermic reactions get cold
9) When bonds break
A
Energy is required
B
Energy is released
10) When bonds form
A
Energy is released
B
Energy is required
11) An ice cube melting into a puddle of water is an example of a/an ____
A
Exothermic process
B
Chemical Reaction
C
Endothermic process
D
Equilibrium
12) Which of the following would increase the speed of a chemical reaction?
A
Dropping the temperature
B
Removing a catalyst
C
Reducing the concentration
D
Increasing the temperature
13) When liquid water freezes to form an ice cube this is an example of a/an ___
A
Endothermic Process
B
Exothermic process
C
Bonds breaking
D
Equilibrium
14) Which statement is true?
A
Forming bonds requires energy
B
Breaking bonds requires energy
C
Breaking bonds releases energy
D
Forming bonds absorbs energy
*select an answer for all questions
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