Measurement Review

1)  Which rule of significant figures would be used for the following math operation?

56.3 + 85.2365 =

• Rule 3

• Rule 5

• Rule 2

• Rule 4

2) Which of the following observations is quantitative?

• The liquid boils at 100 degrees Celsius

• The liquid turns blue litmus paper red

• The liquid is cloudy

• The liquid tastes bitter

3) Which of the following observations is qualitative?

• A chemical reaction is complete in 2.3 seconds

• The solid has a mass of 23.4 grams

• the pH of a liquid is 5.5

• Salt deposits form from an evaporated liquid

4) What is the correct measurement of the substance in the graduated cylinder?

• 24 mL

• 24.0 mL

• 25 mL

• 25.0 mL

A measurement that is close to the accepted value is said to be

• precise

• reliable

• significant

• accurate

8) If some measurements are close to each other but differ widely from the accepted value, these measurements are

• neither precise nor accurate

• accurate, but not precise

• acceptable as a new standard of accuracy

• precise, but not accurate

9) Three darts strike near the center of the target.  Whoever threw the darts is

• accurate

• precise

• both accurate and precise

• neither accurate nor precise

10) The number of significant figures in the following measurement 0.000305 kg is

• 3

• 4

• 5

• 6

11) How many sig figs are in the following measurement? 0.0032 g

• 2

• 3

• 5

• 6

12) The measurement that has three significant figures is

• 0.052 g

• 0.202 g

• 3.065 g

• 5000 g