Scientific Measurements

Front

What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal part.

Front

How many significant figures are in the number 0.007500?

Back

4

Front

Round 12,678.56 to one significant figure.

Back

10,000

Front

What is precision in measurements?

Back

Precision describes how close measurements are to each other, regardless of whether they are close to the true value.

Front

How many significant figures are in the number 10.005?

Back

5

Front

What is the formula for density?

Back

Density = Mass / Volume

Front

Calculate the density of a substance with a volume of 5.0 mL and a mass of 45.3 g.

Back

9.06 g/mL

Front

What is the difference between accuracy and precision?

Back

Accuracy refers to how close a measurement is to the true value, while precision refers to how close measurements are to each other.

Front

What is the significance of trailing zeros in a decimal number?

Back

Trailing zeros in a decimal number are significant because they indicate the precision of the measurement.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal part.