Scientific Notation & Sig Figs
How do you express the number 0.00056 in scientific notation?
5.6×10−4
Convert 1500 milliliters to liters.
1.5 liters
What is the formula for calculating density?
Density = Mass / Volume
Convert 2 meters to centimeters.
200 centimeters (1 sf)
Define accuracy.
How close a measured value is to the actual or true value.
How many significant figures are in the number 0.04500?
4 significant figures
How many grams are in 2.5 kilograms?
2500 grams
A block of metal has a mass of 50 grams and a volume of 25 cm³. What is its density?
2 g/cm³
If a car uses 5 gallons of fuel to travel 200 miles, how many miles per gallon does the car get?
40 miles per gallon
Define precision.
How close repeated measurements are to each other.
Round the number 128,437 to 3 significant figures.
1.28 × 10⁵ or 128000
Convert 6.25 cm³ to liters.
0.00625 liters
What volume will 40 g of a substance with a density of 4 g/cm³ occupy?
10 cm³
1000 m
The results of an experiment are 3.4 g, 3.6 g, and 3.5 g. The expected result is 3.8 g. Are these results accurate, precise, or both?
Precise, but not accurate
What is the rule for determining significant figures when multiplying/dividing
Round to the least number of decimal places used in the calculation.
Convert 5.00 x 10⁶ micrograms to grams. (micro is 1x-6)
5.00 grams
If the accepted density of a material is 8.9 g/cm³ but a student measures it as 9.2 g/cm³, what is the percent error?
3.37%
Convert 35.0 cg to g
.350 g
Which is more precise: a beaker or a graduated cylinder? Explain WHY
A graduated cylinder
Perform the following multiplication with correct significant figures: 4,852 × 2.1.
10000 (2 sig figs tho)
How many minutes are in 25 centuries
1.3e9 minutes
A brick has a mass of .75 kg and occupies a volume of 100. mL. Will it float or not (prove it)
sink 7.5 > 1
A container holds 7.5 x 106 liters of water. Convert this to cubic centimeters. (1 mL = 1 cm3)
7.5 x 109 cm3
A student measures the volume of a liquid to be 25.5 mL when the actual volume is 26.0 mL. Calculate the percent error.
1.92%