IB Energy Test

IB Energy Test

11th Grade

18 Qs

quiz-placeholder

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IB Energy Test

IB Energy Test

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Hard

NGSS
HS-PS1-4, HS-PS1-5, HS-PS3-4

+1

Standards-aligned

Created by

Charles Martinez

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

When 100 cm3 of 1.0 mol dm–3 HCl is mixed with 100 cm3 of 1.0 mol dm–3 NaOH, the temperature of the resulting solution increases by 5.0 °C. What will be the temperature change, in °C, when 50 cm3 of these two solutions are mixed?

2.5

5.0

10

20

Tags

NGSS.HS-PS3-4

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which statement about bonding is correct?

Bond breaking is endothermic and requires energy.

Bond breaking is endothermic and releases energy.

Bond making is exothermic and requires energy

Bond making is endothermic and releases energy.

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Consider the following reactions.

Cu2O(s) + O2(g) → 2CuO(s) ∆HO = –144 kJ

Cu2O(s) → Cu(s) + CuO(s) ∆HO = +11 kJ

What is the value of ∆HO, in kJ, for this reaction?

Cu(s) + O2(g) → CuO(s)

–144 + 11

+144 – 11

–144 – 11

+144 + 11

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Consider the two reactions involving iron and oxygen.

2Fe(s) + O2(g) → 2FeO(s) ∆HO = –544 kJ

4Fe(s) + 3O2(g) → 2Fe2O3(s) ∆HO = –1648 kJ

What is the enthalpy change, in kJ, for the reaction below?

4FeO(s) + O2(g) → 2Fe2O3(s)

–1648 – 2(–544)

–544 – (–1648)

–1648 – 544

–1648 – 2(544)

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which processes have a negative enthalpy change?

I. 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l)

II. HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

III. H2O(g) → H2O(l)

I and II only

I and III only

II and III only

I, II and III

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which equation represents the bond enthalpy for the H–Br bond in hydrogen bromide?

HBr(g) → H(g) + Br(g)

HBr(g) → H(g) + Br(l)

HBr(g) → H(g) + Br2(1)

HBr(g) → H(g) + 1/2Br2(g)

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which types of reaction are always exothermic?

I. Neutralization

II. Decomposition

III. Combustion

I and II only

I and III only

II and III only

I, II and III

Tags

NGSS.HS-PS1-4

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