Thermochemistry: Exploring Heat Changes in Chemical Reactions

Thermochemistry: Exploring Heat Changes in Chemical Reactions

Assessment

Interactive Video

Chemistry, Science, Physics

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

Professor Dave introduces thermochemistry, focusing on exothermic and endothermic reactions, energy conservation, and the role of enthalpy. He explains the concept of heat, its flow, and its measurement in joules and calories. The video also covers thermochemical equations and stoichiometry, providing a comprehensive overview of energy changes in chemical reactions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is thermochemistry primarily concerned with?

The study of chemical reactions

The heat absorbed or released during chemical reactions

The formation of new compounds

The speed of chemical reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an endothermic reaction, what is the sign of Delta H?

Undefined

Positive

Negative

Zero

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is NOT a form of energy?

Chemical

Biological

Electrical

Mechanical

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the letter 'q' represent in thermochemistry?

Pressure

Heat

Temperature

Volume

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to heat in a system when temperature and pressure are constant?

q = Delta H

q = 0

q = Delta S

q = Delta G

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many joules are equivalent to one calorie?

3.184

4.184

5.184

6.184

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the food Calorie equivalent to in terms of calories?

1000 calories

100 calories

10 calories

500 calories

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