2. Measurement and Problem Solving

Significant Figures: Precision in Measurements

2. Measurement and Problem Solving

# Significant Figures: Precision in Measurements - Video Tutorials & Practice Problems

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Get a 10 bullets summary of the topic**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 metal bar to the correct number of significant figures.

A

15 cm

B

15.000 cm

C

20 cm

D

15.0 cm

E

15.00 cm

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Problem

ProblemWhat is the correct reading for the liquid in the burette provided below?

A

32 mL

B

32.30 mL

C

32.26 mL

D

32.0 mL

E

32.2 mL

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PRACTICE PROBLEMS AND ACTIVITIES (5)

- Use the following graph for problems1.23 and 1.24: d. How many minutes were needed to reach a temperature of...
- a. What is the specific gravity of the following solution?
- Assume that you are delivering a solution sample from a pipette. Figures (a) and (b) show the volume level bef...
- Measure the length of each of the objects in diagrams (a), (b), and (c) using the metric ruler in the figure. ...
- State the temperature on the Celsius thermometer to the correct number of significant figures: (2.3) A