Chapter 3 - Scientific Measurements

Question 1

Accuracy vs Precision

Answer 1

Needed number: 7
Accurate: 7,7,8,7,12,7,7,16,7
Precise: 9,9,8,9,8,10,7,8,9

Question 2

How to read an instrument

Answer 2

N/A

Question 3

Significant figure rules

Answer 3

Significant figured include all known digits plus one estimated digit

Question 4

Calculations with sig figs

Answer 4

When adding or subtracting, the number of decimal places will affect the outcome of the answer
When multiplying or dividing the number of sig figs will affect the answer

Question 5

SI base units

Answer 5

Units of measurement

Question 6

Metric Prefixes

Answer 6

Kilo- 1,000
Centi- 0.01
Milli- 0.001

Question 7

Absolute Zero

Answer 7

the lowest temperature that is theoretically possible, at which the motion would be minimal. It is zero on the Kelvin scale

Question 8

Converting C to K

Answer 8

C-K = C +273
K-C = K - 273

Question 9

Density

Answer 9

the degree of compactness of a substance

Question 10

Conversion factor

Answer 10

Must cancel out one unit
Must introduce new unit
All units except what you want must cancel out