Enthalpy/Entropy/Hess's Law

Enthalpy/Entropy/Hess's Law

10th Grade

19 Qs

quiz-placeholder

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Enthalpy/Entropy/Hess's Law

Enthalpy/Entropy/Hess's Law

Assessment

Quiz

Chemistry

10th Grade

Hard

NGSS
HS-PS1-4, HS-PS3-1

Standards-aligned

Created by

Alexandra Lawson

FREE Resource

19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Hess' Law makes use of which principle to calculate the enthalpy change of a reaction?

The law of conservation of energy

The law of conservation of matter

The law that you will always find a lost item in the last place you look for it

Murphy's law

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The following equations show the oxidation of carbon and carbon monoxide to carbon dioxide.


C(s) +O2(g) CO2(g) ΔH = –x kJ mol–1

CO(g) + O2(g) CO2(g) ΔH = –y kJ mol–1


What is the enthalpy change, in kJ mol–1, for the oxidation of carbon to carbon monoxide?


C(s) + O2(g) CO(g)

x + y

-x - y

y - x

x - y

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Consider the following equations.


Mg(s) + O2(g) → MgO(s)H = –602 kJ

H2(g) + O2(g) → H2O(g)H = –242 kJ


What is the ∆H value (in kJ) for the following reaction?


MgO(s) + H2(g) → Mg(s) + H2O(g)

-844

-360

+360

+844

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Using the equations below:


C(s) + O2(g) → CO2(g) ∆H = –390 kJ

Mn(s) + O2(g) → MnO2(s) ∆H = –520 kJ


what is ∆H (in kJ) for the following reaction?


MnO2(s) + C(s) → Mn(s) + CO2(g)

910

130

-130

-910

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is true of an endothermic reaction?

The substances in the reaction will release energy

The substances in the reaction will absorb energy

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

When substances change from solid, to liquid, to gas, entropy increases. Why?

The molecules become more randomly arranged and move more chaotically

The molecules spread out and take up more space

The molecules become more reactive

The molecules become more compact and organized

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

decrease

increase

remains the same

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