Definition Of Mass

Mass is the quantity of matter in an object.

More About Mass

Mass is often called as weight.
Mass can be measured in both metric and customary units.
Kilogram, gram, and milligram are the metric units whereas ounces and pounds are the customary units.

Examples of Mass

Suppose a sandwich weighs 7 ounces then the same mass in grams is approximately 200 grams.
As 1 ounce is about 28 grams then 7 ounce=7 × 28  200 grams.

Video Examples: Pound Force to Pound Mass Conversion : Physics & Math

Solved Example on Mass

Ques: Which of the following metric units would you use to measure the weight of a pizza?

Choices:

A. grams
B. millimeters
C. seconds
D. liters
Correct Answer: A

Solution:

Step 1: Grams is used to measure not too small and not too large weights. 
Step 2: Seconds is a unit of time, liters is a unit of volume and millimeters is a unit of length. 
Step 3: So, the best metric unit to measure the weight of a pizza is grams.

Related Worksheet

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