Significant Figures

Significant figures are numbers that determine the accuracy and precision of a quantity. All numbers from 1-9 are significant. (Zeroes are usually not significant, but there are exceptions to this rule.)

In this quiz, you will be asked many questions relating to significant figures. Some people tend to have a lot of trouble with these, so this may be very educational for you!

Created by: A Bored Human

How many significant figures are in this number: 2.33
- One
- Two
- Three
How many significant numbers are in this number: 2000
- One
- Two
- Three
- Four
How many significant figures are in this number: 273.0
- One
- Two
- Three
- Four
In which of the following numbers is the zero NOT significant?
- 10.9
- 5.0
- 0.4
- 201
Which of the following numbers does NOT have four significant figures?
- 2891
- 28.00
- 2690
- 1234
When multiplying 60 by 30, how many significant figures how should you use in your answer?
- One
- Two
- Three
- Four
Which of these numbers does NOT have five significant figures?
- 1.5000
- 1500.0
- 0.15000
- 0.00015
How many significant numbers are in this number: 1.01234567
- Six
- Seven
- Eight
- Nine
You are asked to round the answer to this multiplication problem to the correct amount of significant figures: 28 * 5430. How many significant figures would be appropriate?
- Two
- Four
- Five
- Six
You are asked to round the answer to this multiplication problem to the right amount of significant figures: 500 * 1392. How many significant figures would be appropriate?
- One
- Three
- Four
- Six
How would you round this number to ONE significant figure: 0.0250
- 0.03
- 0.02
- 0.030
How would you round this number to TWO significant figures: 2495
- 2490
- 24.95
- 2500
- 0.2495
True or False: The number 0.500 has FOUR significant figures.
- True
- False; the zero to the left of the decimal does not count.
- False; the numbers to the right of the five do not count.
True or False: The number 240.0 has FOUR significant figures
- True
- False; the zeroes do not count
- False; the second zero does not count
- False; the first zero does not count
Critical Thinking Question: If you were to answer all of the questions correctly in this quiz, how many significant figures would be in your score?
- One
- Two
- Three
"A gas occupies 15.0 liters at a pressure of 2.00 ATM. What is the volume when the pressure is raised to 5.00 ATM?" The answer to this problem is is exactly SIX LITERS. How many significant figures should be used in this answer?
- Two
- Three
- Four
- Cannot be determined
"A gas occupies 3.30 liters at a temperature of 30.00 degrees Celsius. What would its volume be at a temperature of 74.25 degrees Celsius?" The answer to this question is 8.1675 LITERS. How many significant figures should the answer be rounded to?
- Two
- Three
- Four
- Cannot be determined
"A gas occupies 32.0 liters at a temperature of 100.0 degrees Celsius. In order for the gas to occupy 20.0 liters, what would the temperature have to be?" The answer is 62.5 degrees Celsius. (Which should be in Kelvin, but it doesn't matter.) How would you round this number to the correct number of significant figures?
- 63
- 62.0
- 60
- It already has the correct number of significant figures
- Cannot be determined

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