Understanding Parts Per Million and Percent

Understanding Parts Per Million and Percent

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains various units of measurement such as per mil, parts per million, billion, and trillion. It covers how these units are used in atmospheric chemistry, particularly in measuring carbon dioxide levels. The tutorial also demonstrates how to convert between these units and provides practical examples, emphasizing the importance of using appropriate units for different compounds.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does 'per mil' represent in terms of powers of ten?

1 times 10 to the power of 9

1 times 10 to the power of 6

1 times 10 to the power of 3

1 times 10 to the power of 2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If oxygen is 20% of the Earth's atmosphere, how many per mil is it?

200 per mil

400 per mil

100 per mil

500 per mil

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you convert from percent to parts per million?

Multiply by 10 to the power of 2

Multiply by 10 to the power of 3

Multiply by 10 to the power of 4

Multiply by 10 to the power of 6

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the difference in powers of ten when converting from parts per million to parts per billion?

4

3

9

6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In atmospheric chemistry, which unit is commonly used for carbon dioxide?

Percent

Parts per million

Parts per billion

Per mil

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the conversion factor when going from parts per billion to parts per trillion?

10 to the power of 6

10 to the power of 4

10 to the power of 2

10 to the power of 3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is 400 parts per million of carbon dioxide expressed as a percent?

0.4%

4%

0.04%

0.004%

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