Scientific Notation and Unit Conversions in Science
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66 Terms
What is the prefix for 10^3?
Kilo (k)
What is the prefix for 10^2?
Hecto (h)
What is the prefix for 10^1?
Deka (da)
What is the base unit in metric prefixes?
10^0 (1)
What is the prefix for 10^-1?
Deci (d)
What is the prefix for 10^-2?
Centi (c)
What is the prefix for 10^-3?
Milli (m)
What is the prefix for 10^-6?
Micro (μ)
What is the prefix for 10^-9?
Nano (n)
What happens when moving left in scientific notation?
The exponent becomes positive.
What happens when moving right in scientific notation?
The exponent becomes negative.
How many numbers are required before the decimal in scientific notation?
One nonzero number.
What is 0.0045 in scientific notation?
4.5 x 10^-3
What is 4500 in scientific notation?
4.5 x 10^3
What is 0.000072 in scientific notation?
7.2 x 10^-5
What is 67000 in scientific notation?
6.7 x 10^4
Do leading zeros count in significant figures?
No
Do captive zeros count in significant figures?
Yes
Do trailing zeros after a decimal count in significant figures?
Yes
How many significant figures are in 0.00450?
3
How many significant figures are in 0.0900?
3
How many significant figures are in 400.0?
4
How many significant figures are in 0.08040?
4
How many significant figures are in 0.006070?
4
What is 45.6789 rounded to 3 significant figures?
45.7
What is 12.784 rounded to 2 significant figures?
13
What is 5.67891 rounded to 3 significant figures?
5.68
What is 0.00987 rounded to 2 significant figures?
0.0099
How many grams are in 1 kg?
1000 g
How many centimeters are in 1 m?
100 cm
How many milliliters are in 1 L?
1000 mL
How many meters are in 1 km?
1000 m
What is 1 cm in meters?
0.01 m
What is 1 nm in meters?
10^-9 m
What is 1 μm in meters?
10^-6 m
What happens when converting from a big unit to a small unit?
The number gets bigger; move decimal right.
What happens when converting from a small unit to a big unit?
The number gets smaller; move decimal left.
How do you convert between units?
Multiply by conversion factors until unwanted units cancel.
What is 0.45 kg in grams?
450 g
What is 0.82 kg in grams?
820 g
What is 0.006 kg in grams?
6 g
What is 3400 mL in liters?
3.4 L
What is 0.0042 km in meters?
4.2 m
What is 0.45 m in centimeters?
45 cm
What is 5.6 m in centimeters?
560 cm
What is 820 cm in meters?
8.2 m
What is 515 km in centimeters?
5.15 x 10^7 cm
What is 7.6 nm in centimeters?
7.6 x 10^-7 cm
What is 8.4 nm in centimeters?
8.4 x 10^-7 cm
What is 0.0065 km in centimeters?
6.5 x 10^2 cm
What is 7200000 μm in meters?
7.2 m
What is 0.045 m in nanometers?
4.5 x 10^7 nm
What is the correct setup for converting grams to kilograms?
5 g x (1 kg / 1000 g)
What is the correct setup for converting centimeters to meters?
75 cm x (1 m / 100 cm)
What is the correct setup for converting milliliters to liters?
250 mL x (1 L / 1000 mL)
What is the correct setup for converting grams to milligrams?
9 g x (1000 mg / 1 g)
When converting kg to g, how many places do you move?
Move right 3 places.
When converting g to kg, how many places do you move?
Move left 3 places.
When converting m to cm, how many places do you move?
Move right 2 places.
When converting cm to m, how many places do you move?
Move left 2 places.
When converting L to mL, how many places do you move?
Move right 3 places.
When converting mL to L, how many places do you move?
Move left 3 places.
When converting km to m, how many places do you move?
Move right 3 places.
When converting m to km, how many places do you move?
Move left 3 places.
When converting nm to m, how many places do you move?
Move left 9 places.
When converting m to nm, how many places do you move?
Move right 9 places.