How many significant figures are in the number 0.220?
Four, every digit is significant.
Two, only the non-zeros are significant.
Three, the leading zero is not significant, but the rest are
None. Any number less than one is not significant.
Which measurement has higher uncertainty?
123.45
123.4
123
120
What would give you a more precise reading, a yard stick with feet as its smallest unit or a yard stick with inches as its smallest unit?
Both are equally precise.
The yard stick with feet.
The yard stick with inches.
It depends on what is being measured.
How many significant figures should the product of 1.2 x 1.4592 contain?
Two
Five
Six
Three
You are measuring the volume of a liquid that is 20.31 mL. What are your certain digits in this measurement?
2 and 0
1 only
3 and 1
2, 0, and 3
Which of the following is the closest to a mass of 500 mL of water?
0.500 g
500 kg
500 g
5 kg
What is the density of a solid that has a mass of 9.2 grams and a volume of 12.3 cm3 ? Would this object float or sink in water?
1.4 g/cm3, sink
3.1 g/cm3, sink
1.4 g/cm3, float
0.75 g/cm3, float
Which of the following are arranged from smallest unit to largest unit?
km, m, cm, mm
cm, mm, m, km
mm, cm, m, km
cm, m, mm, km
What is the mass of a liquid with a density of 2.12 g/mL and a volume of 53.0 mL (to the nearest gram)?
0.0400 g
50.9 g
55.1 g
112 g
How many mL are in 3.4 L?
3,400 mL
3.4 mL
0.34 mL
0.0034 mL
What is SI units shorthand for?
International System of Units
Intrinsic System of Units
Scientific Invention Units
Imperial System of Units
In the SI units, what makes the base units special?
They are the largest units in scale.
They are the most basic units from which others are obtained
They are created by combining other units algebraically.
They are the smallest units in scale.
What is the point of having units in the sciences?
They distinguish our #'s as pure #'s instead of measurements
They distinguish our numbers as measurements instead of #'s
There really is no point; it's just a formality.
We use units to tell us we are working with the metric
Which of the following is an example of a unit?
meter
time
volume
force
What do we call an SI unit that is created by combining base units using algebra?
a derived unit
a basic unit
a multiplied unit
a divided unita
How many significant figures are in 54,050?
5
1
4
3
