What is meant by an exothermic reaction?
Energy changes in reactions

Quiz
•
Chemistry
•
9th - 10th Grade
•
Hard
Elizabeth Anscombe
Used 48+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An exciting reaction
A reaction that takes in energy
A reaction that gives out energy
A reaction from outer space
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by an endothermic reaction?
A really cold reaction
A reaction that takes in energy
A reaction that gives out energy
The end of a reaction
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of these are exothermic reactions?
Combustion
Neutralisation
Dissolving
Respiration
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of these are endothermic reactions?
Displacement reactions
Dissolving
Respiration
Photosynthesis
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of these equations would you use to work out an energy change?
n = c x v
E = mc2
Q = mcΔT
n = m/Mr
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of these equations would you use to work out the ΔH?
ΔH = QmcΔT
ΔH = ma
ΔH = Qn
ΔH = -Q/n
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
200 cm3 of 0.1 mol dm-3 sodium hydroxide was mixed with 200 cm3 of 0.1 mol dm-3 nitric acid. The temperature increased from 20 to 32°C. What was the energy change?
Q = 200 x 4.2 x 32 = 26880 J
Q = 400 x 4.2 x 32 = 53760 J
Q = 200 x 4.2 x 12 = 10080 J
Q = 400 x 4.2 x 12 = 20160 J
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