Chapter 2

Question 0

What is the Law of Conservation of Energy?

Answer 0

Energy cannot be created of destroyed

Question 1

What’s energy?

Answer 1

The capacity to do some kind of work such as moving an object.

Question 2

What is temperature?

Answer 2

The measure of the average kinetic energy of the particles in an object.

Question 3

What is heat?

Answer 3

The energy that is transferred between two objects because of a difference in their temperatures

Question 4

Does an endothermic process absorb of release energy?

Answer 4

Absorbs

Question 5

Does an exothermic process absorb of release energy?

Answer 5

Releases

Question 6

What’s a system?

Answer 6

All components that are being studied

Question 7

What is the surroundings?

Answer 7

Everything outside of the system

Question 8

What are the 6 different forms of energy?

Answer 8

Chemical, electrical, mechanical, sound, heat, light.

Question 9

How many significant figures are in 10.0005?

Answer 9

6

Question 10

How many significant figures are in 0.003465?

Answer 10

4

Question 11

How many significant figures are in 43000?

Answer 11

2

Question 12

How many significant figures are in 6.43?

Answer 12

3

Question 13

How many significant figures are in 7.4x10^4?

Answer 13

2

Question 14

Round 532.35 to 4 significant figures.

Answer 14

532.4

Question 15

Round 45,632 to 3 significant figures.

Answer 15

45,600

Question 16

What does Cp symbolize?

Answer 16

Specific heat

Question 17

What does q symbolize?

Answer 17

Energy

Question 18

How do you add and subtract using significant figures?

Answer 18

How many numbers there awe to the right of the decimal.

Question 19

How to you multiply and divide using significant figures?

Answer 19

You’re looking at the least amount of total significant figures

Question 20

What does J symbolize?

Answer 20

Joules

Question 21

What does C symbolize?

Answer 21

Celcius

Question 22

What does (triangle)T symbolize?

Answer 22

Temperature

Question 23

What does an m symbolize?

Answer 23

Mass

Question 24

How does heat transfer to objects?

Answer 24

Warmer or cooler

Question 25

Calculate the specific heat of a substance is a 35g sample absorbs 48J as the temperature is raised from 293K to 313K.

Answer 25

0.7 J/gk

Question 26

Calculate the specific heat of a substance is a 40g sample absorbs 2342J as the temperature is raised from 124K to 247K.

Answer 26

0.5 J/gK

Question 27

Calculate the specific heat of a substance is a 5.00g sample absorbs 17.6J as the temperature is raised from 25C to 40C?

Answer 27

0.235 J/gK

Question 28

Calculate the specific heat of a substance is a 95.4g sample absorbs 849J as the temperature is raised from 298.0K to 321.1J?

Answer 28

386000 J/gK

Question 29

Calculate the specific heat of a substance is a 1.6g sample absorbs 5.57J as the temperature is raised from 273K to 300K?

Answer 29

0.13 J/gK

Question 30

Calculate the specific heat of a substance is a 8.0g sample absorbs 63J as the temperature is raised from 314K to 340K?

Answer 30

0.3 J/gK

Question 31

Calculate the specific heat of a substance is a 15.75g sample absorbs 1086.7J as the temperature is raised from 25C to 175C?

Answer 31

0.45 J/gK

Question 32

Calculate the specific heat of a substance is a 25.0g sample absorbs 455J as the temperature is raised from 25C to 155C?

Answer 32

0.14 J/gK

Question 33

Calculate the specific heat of a substance is a 18.69g sample absorbs 41.72J as the temperature is raised from 10.0C to 27.0C?

Answer 33

0.131 J/gK

Question 34

Calculate the specific heat of a substance is a 120g sample absorbs 9612J as the temperature is raised from 25C to 115C?

Answer 34

0.51 J/gK

Question 35

How do you convert C to K?

Answer 35

Add 273.15

Question 36

How do you covert K to C?

Answer 36

Subtract 273.15

Question 37

How much is 63C in K?

Answer 37

338.15

Question 38

How much is -55C in K?

Answer 38

218.15

Question 39

How much is 205K in C?

Answer 39

-68.15

Question 40

How much is 315K in C?

Answer 40

41.85

Question 41

How many significant figures are in 20.666?

Answer 41

5

Question 42

Add: 11.23 + 9.91 + 12.132

Answer 42

33.27

Question 43

Subtract: 2.8890 - 4.763

Answer 43

-1.874

Question 44

Multiply: 0.24 x 12.60 x 150

Answer 44

450

Question 45

Divide: 24.6/0.005

Answer 45

5000

Question 46

Write is scientific notation: 123,000,000

Answer 46

1.23 x 10^8

Question 47

Write is scientific notation: 0.000 00982

Answer 47

9.82 x 10^-6

Question 48

Write in standard form: 6.4 x 10^5

Answer 48

640,000

Question 49

Write in standard form: 8.456 x 10^-2

Answer 49

.08456