Energy changes in reactions

Energy changes in reactions

9th - 10th Grade

10 Qs

quiz-placeholder

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Energy changes in reactions

Energy changes in reactions

Assessment

Quiz

Chemistry

9th - 10th Grade

Hard

Created by

Elizabeth Anscombe

Used 48+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is meant by an exothermic reaction?

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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