Apologia Chemistry Module 1

Created by ramblin12 

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8 terms · Measurement and units

Matter

Anything that has mass and takes up space

Accuracy

An indication of how close a measurement is to the true value

Precision

An indication of the scale on the measuring device that was used

1 cubic centimeter

1 millimeter

A digit within a number is considered to be a significant figure if:

- it is non-zero OR
- it is a zero that is between two significant figures OR
- it is a zero at the end of the number and to the right of the decimal point

Significant figures when adding and subtracting

Round your answer so it has the same precision as the least precise measurement

Significant figures when multiplying or dividing

Round your answer so that it has the same number of significant figures as the measurement with the fewest number of significant figures

Density

An object's mass divided by the volume that the object occupies
p = m/V

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