C5 Energy changes
Authored by Kirsten Stewart
Chemistry, Science
10th - 11th Grade
Used 70+ times
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
State the law of conservation of energy.
Energy cannot be created or destroyed, it can only transferred from one place to another.
Energy can be created or destroyed, it can only transferred from one place to another.
Energy cannot be light or sound it can only be kinetic energy moving from one place to another.
Energy can destroyed, and then can reform to be transferred from one place to another.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the law of conservation of energy apply to chemistry?
In all physical reactions, energy is either transferred to the surroundings or from the surroundings.
In all chemical reactions, energy is either transferred to the surroundings only.
In all chemical reactions, energy is either transferred to the surroundings or from the surroundings.
In all physical reactions, energy is absorbed by the surroundings.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an exothermic reaction?
A reaction where energy is transferred from the surroundings.
A reaction where energy is transferred to the surroundings.
A reaction where energy is absorbed into surroundings.
A reaction where energy is absorbed from the surroundings.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Give two examples of exothermic reactions.
Combustion, photosynthesis
Decomposition, respiration
Neutralisation, photosynthesis
Combustion, respiration
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the temperature of the surroundings during an exothermic reaction?
They increase.
They decrease.
They stay the same.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an endothermic reaction?
A reaction where energy is transferred from the surroundings.
A reaction where energy is transferred to the surroundings.
A reaction where energy is absorbed into surroundings.
A reaction where energy is absorbed from the surroundings.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Give two examples of endothermic reactions.
Combustion, photosynthesis
Decomposition, respiration
Neutralisation, photosynthesis
Thermal decomposition reactions, citric acid and sodium hydrogencarbonate.
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