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Course: EST 2 Chemistry
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EST 2 Chemistry

Structure of Matter

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States of Matter

0/7

Reaction Types

0/9

Stoichiometry

0/7

Equilibrium and Reaction Rates

0/7

Thermochemistry

0/5

Descriptive Chemistry

0/7

Laboratory Skills

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Quiz

Energy changes – Check yourself

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Energy changes EST Chemistry check yourself quiz: free practice for EST 2 Chemistry. Work through this Energy changes EST Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 6.1 Energy changes lesson. More practice: EST 2 Chemistry — all units. Syllabus: OpenStax free science textbooks.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
An exothermic reaction has
ΔH > 0
ΔH < 0
ΔH = 0
no heat change
2.
Heat to warm 10 g water by 10 °C
41.8 J
418 J
4180 J
100 J
3.
If ΔH for A → B is −50 kJ, for B → A it is
−50 kJ
+50 kJ
0
−100 kJ
4.
Which is endothermic?
burning methane
freezing water
melting ice
condensing steam
5.
Which statement best describes Energy?
Heat content of a system at constant pressure.
An insulated device for measuring heat changes.
The capacity to do work or produce heat.
Releases heat; ΔH < 0.
6.
Which statement best describes Heat (q)?
The capacity to do work or produce heat.
An insulated device for measuring heat changes.
Energy transferred due to a temperature difference.
Energy to raise 1 g of a substance by 1 °C.
7.
Which statement best describes Specific heat (c)?
Energy transferred due to a temperature difference.
An insulated device for measuring heat changes.
A balanced equation including ΔH.
Energy to raise 1 g of a substance by 1 °C.
8.
Which statement best describes Calorimeter?
Absorbs heat; ΔH > 0.
An insulated device for measuring heat changes.
Heat content of a system at constant pressure.
A balanced equation including ΔH.
9.
Which statement best describes Enthalpy (H)?
An insulated device for measuring heat changes.
Heat content of a system at constant pressure.
Releases heat; ΔH < 0.
Absorbs heat; ΔH > 0.
10.
Which statement best describes Exothermic?
Absorbs heat; ΔH > 0.
Releases heat; ΔH < 0.
Energy transferred due to a temperature difference.
A balanced equation including ΔH.
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Part of Thermochemistry — see every lesson and quiz in this unit.
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