Ch. 5 Measurements & Calculations

Significant Figures

100

The certain digits and the first uncertain digit of a measurement

What is significant figures?

200

The number of sig. figs. in the following number

518

What is 3 sig. figs.?

300

For the measurement 0.817 m, the digit that is estimated.

*think about what is looks like to take measurements on a meter stick*

What is 7?

400

The final answer of the following problem correctly reflecting the number of significant figures/decimal places.

5.50 - 2.1 = ?

What is 3.4?

*adding/subtracting- the least number of decimal places

500

The final answer of the following problem correctly reflecting the number of significant figures/decimal places.

0.005763 / 0.0251 = ?

What is 0.230 or 0.229?

Scientific Notation

100

Convert 3,180 to scientific notation.

What is 3.18 x 10³?

200

Convert 0.00920 to scientific notation.

What is 9.20 x 10^-3?

300

Convert the following to decimal notation. Your answer should contain the correct number of significant figures. 

3.6 x 10⁴

What is 36000?

400

Convert the following to decimal notation. Your answer should contain the correct number of significant figures.

1.20 x 10-3

What is 0.00120?

500

Convert the following to decimal notation. Your answer should contain the correct number of significant figures.

3.39 x 10⁶

What is 3390000?

1 unit dimensional analysis

100

18.0 cm to meters

What is 0.180 meters?

200

-10.0°C to °F

What is 14.0 ºF?

300

3.62 grams to centigrams

What is 362 centigrams?

400

456 dm3 to cm3 

What is 456,000 cm³?

500

50.0 L to dm³

What is 50.0 dm³?

2 unit dimensional analysis

100

52.0 kg/dm³ to mg/cm³

What is 5.20 x 104 mg/cm³

200

2.0 kg/L to mg/cm³

What is 2.0 x 10³ mg/cm³ or 2000 mg/cm³

300

956 mg/cm³ to g/cm³

What is 0.956 g/cm³?

400

0.640 g/mL to kg/L

What is 0.640 kg/L?

500

65.0 cm³/sec to dm³/min

What is 3.90 dm³/min?

Density

100

A rock with mass 85.02 g occupies a volume of 20.3 cm3. Calculate the density of the rock.

What is 4.19 g/cm³?

200

A student determines the mass and volume of a liquid to be 28.10 g and 35.8 mL respectively. Calculate the density of the liquid.

What is 0.785 g/mL?

300

The density of gold is 19.32 g/mL. Calculate the mass of 100.0 mL of gold.

What is 1932 g of gold?

400

The density of aluminum is 2.70 g/mL. Calculate the volume of 500.0 g of aluminum.

What is 185 mL?

500

The density of iron is 7.87 g/mL. Calculate the volume of 250.0 g of iron.

What is 31.8 mL?