1. Intro to General Chemistry
Significant Figures: Precision in Measurements
1. Intro to General Chemistry
Significant Figures: Precision in Measurements - Video Tutorials & Practice Problems
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Significant Figures are used to discuss the level of precision in any measurement.
Recording Measurements
1
concept
Significant Figures Precision Concept
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2
example
Significant Figures Precision Example
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Problem
ProblemRead the length of the pencil to the correct number of significant figures.
A
8.0 cm
B
8.000 cm
C
9 cm
D
9.0 cm
E
9.00 cm
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Problem
ProblemWhat is the correct reading for the liquid in the burette provided below?
A
7 mL
B
7.0 mL
C
7.20 mL
D
7.00 mL
E
6.80 mL
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Additional resources for Significant Figures: Precision in Measurements
PRACTICE PROBLEMS AND ACTIVITIES (20)
- (a) What is the length of the pencil in the following figure if the ruler reads in centimeters? How many signi...
- (b) An automobile speedometer with circular scales reading both miles per hour and kilometers per hour is show...
- Report the reading on the buret to the correct number of significant figures. (LO 1.15) (a) 1 mL (b) 1.4 mL ...
- What is the temperature reading on the fol-lowing Celsius thermometer? How many sig-nificant figures do you ha...
- How many milliliters of water does the graduated cylinder in (a) contain, and how tall in centimeters is the p...
- (c) Is a graduated cylinder such as that shown in Figure 1.21 likely to afford the accuracy of measurement nee...
- An experimental procedure call for 250 mg of calcium car-bonate. The balance in the laboratory measures mass i...
- You have a graduated cylinder that contains a liquid (see photograph). Write the volume of the liquid, in mill...
- Read each measurement to the correct number of significant figures. Laboratory glassware should always be rea...
- Read each measurement to the correct number of significant figures. Laboratory glassware should always be read...
- Read each measurement to the correct number of significant figures. Laboratory glassware should always be read...
- Read the length of the metal bar with the correct number of significant figures.
- Read the water level with the correct number of significant figures.
- Which tool can be used to measure the volume of a liquid to one decimal place?
- Significant figures are important because they indicate
- The digits that are reported in an answer are called
- The maximum number of significant digits is called the
- If a measured quantity is written correctly, which digits are certain?
- Which tool would you use to find the mass of a small amount of substance?
- Which tool is most suitable for a chemist to measure the mass of a liquid?