Unit 1 Review Question Preview (ID: 53002)


Accuracy Precision Sig Fig Density Sci Not Metric. TEACHERS: click here for quick copy question ID numbers.

How do you round your final answer when adding or subtracting measurements
a) Round to the same number of sig figs as the measurement with the least amount of sig figs.
b) Round your answer to two places after the decimal point
c) Round to the same number of sig figs as the first measurement you made
d) Round your answer to have the same precision as the least precise measurement

Where do you read the meniscus?
a) At the top
b) At the bottom
c) In the middle
d) Slightly below to account for cohesion and adhesion

How close the data sets are to one another is -
a) Density
b) Precision
c) Accuracy
d) Error

How close your data is to the intended target is -
a) Density
b) Precision
c) Accuracy
d) Error

How many sig figs are in this number: 10.002
a) 2
b) 3
c) 4
d) 5

How many sig figs are in this number: 523
a) 0
b) 1
c) 2
d) 3

How many sig figs are in this number: 61000
a) 2
b) 3
c) 4
d) 5

Round 21.860051 to 3 significant figures.
a) 21.860
b) 21.8
c) 22.0
d) 21.9

Perform the operation and round to the correct number of significant figures: 6.201cm + 7.4cm + 0.68cm + 12.0cm
a) 26cm
b) 26.3cm
c) 26.30cm
d) 26.2cm

Perform the operation and round to the correct number of significant figures: (22.16 + 21.30) / 1.251
a) 34.7
b) 34.741
c) 34.74
d) 35

A student measured the mass of some sodium chloride for a lab. The lab called for 6.25 g (the theoretical measurement), but the student measured 6.00 g instead. What is the percent error for this mass?
a) 4.0%
b) -4.0%
c) 4%
d) -4%

A piece of metal is placed on the balance and the mass was found to be 23.1g and the volume is found to be 2.72mL. What is the density?
a) 2g/mL
b) 2.5g/mL
c) 2.492g/mL
d) 2.49g/mL

5.1cm = ? hm
a) 0.00051hm
b) 0.0051hm
c) 51000hm
d) 5100hm

2.23kg = ? mg
a) 0.0000023 mg
b) 0.000023 mg
c) 2230000 mg
d) 223000 mg

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