SigFigs & Rounding
SigFig Calculations
Measure This!
Density
Specific Heat
100
The number of significant figures in 0.0075 g
2
100
10.4168 m - 6.0 m =
4.4 m
100
What place value and unit would this ruler read to?
100ths place
X.XX cm
100
Why does a bubble of carbon dioxide rise to the top of a glass of soda?
The density of the carbon dioxide is less than the density of water
100
What kind of specific heat capacity do you have if you do not change your temperature readily?
High specific heat
200
The number of significant figures in 150.0 mL
4
200
1.31 cm x 2.3 cm =
3.0 cm2
200
What place value and unit would this graduated cylinder read to?
10ths place
XX.X mL
200
The 2nd most dense solid
Popcorn Kernel
200
Which substance would increase temperature the fastest?
Lead
300
Round 0.0583 mm to 1 significant figures
0.06 mm
300
20.2 cm / 7.410 s =
2.73 cm/s
300
What is the length of the object below?
2.29 cm
or
2.30 cm
300
Use the data below to calculate the density of silly puddy
2 g/mL
300
What type of substances have low specific heats?
Metals
400
Round 1864.2 km to 2 significant figures
1900 km
400
6.201 in. + 7.40 in. + 12.0 in. =
25.6 in
400
Determine the volume of the liquid in the graduated cylinder.
328 mL
(327 - 330. would be acceptable)
400
A block of copper metal has a mass of 1896 g. The dimensions of the block are 8.40 cm x 5.45 cm x 4.6 cm. What is the density of copper?
9.0 g/cm3
400
Which substance would increase temperature the slowest?
Liquid water
500
Round 0.05697 L to 3 significant figures
0.0570 L
500
5.7621 m x 6.901 m x 0.460 m =
18.3 m3
500
Read the temperature off of the thermometer
19 °C
500
A flask with a mass of 345.8 g is filled with 225 mL of carbon tetrachloride (CH4). The mass of the flask and CH4 is found to be 703.55 g. Calculate the density of CH4
1.59 g/mL
500
What is the definition for specific heat capacity?
Specific heat is defined by the amount of heat needed to raise the temperature of 1 gram of a substance 1 degree Celsius (°C).