AnswersCR SS Chemistry S2 201819 2026Scientific Notation and Significant Figures

Scientific Notation and Significant Figures Answers

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1
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Which measurement of length is the smallest?

A
9 10–6 m
Option A
B
7 10–5 m
Option B
C
7 101 m
Option C
D
9 102 m
Option D
2
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Joan writes four numbers on the board in standard form, and then she writes their scientific notation. The table below shows her numbers. Joan’s NumbersRowNumber in standard formNumber in scientific notation17,1007.1 1032–0.000041–4.1 10–53–39,000–3.9 1044120,0001.2 106In which row of the table did Joan make a mistake in writing the scientific notation?

Question illustration
A
1
B
2
C
3
D
4
3

How is 6.3 written in scientific notation?

A
6.3 100
Option A
B
63 10–1
Option B
C
6.3 101
Option C
D
63 100
Option D
4

What is the correct way to write 1,550,000,000 in scientific notation?

A
1.55 109
Option A
B
1.55 1010
Option B
C
15.5 108
Option C
D
15.5 109
Option D
5

Which is the correct way to write 602,200,000,000,000,000,000,000 in scientific notation?

A
6022 1019
Option A
B
6022 1020
Option B
C
6.022 1022
Option C
D
6.022 1023
Option D
6

Which number is equal to –906,060?

A
–9.0606 105
Option A
B
–9.06 105
Option B
C
9.06 10–5
Option C
D
9.0606 10–5
Option D
7

What is the correct way to represent 5600 L using scientific notation?

A
–5.6 103 L
Option A
B
–5.6 10–3 L
Option B
C
5.6 10–3 L
Option C
D
5.6 103 L
Option D
8

Joseph divides 8.64 by 2.0. How many significant figures should his answer have?

A
one
B
two
C
three
D
five
9

Jon performs the following calculation.Which value from his calculation most strongly affects the number of significant figures in the answer?

Question illustration
A
1
B
2.0
C
3.00
D
4.000
10

Which of these rules is applicable to subtracting two values that have different numbers of decimal places (for example, subtracting 2.1 from 2.15)?

A
The answer is less accurate than either value.
B
The answer is more precise than either value.
C
The answer has the same number of decimal places as the least precise value.
D
The answer has the same number of significant figures as the most precise value.

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