Mass Measurement
Mass measures how much matter is in an object. We measure small masses in grams (g) and larger masses in kilograms (kg).
What You Need to Know
Key Concept Diagram
Grams (g) are used for light objects like a pencil or a strawberry
Kilograms (kg) are used for heavier objects like a bag of flour
1 kilogram = 1000 grams
We use scales (balance scales or digital scales) to measure mass
Key Vocabulary
Mass
The amount of matter in an object, measured in grams or kilograms
Gram (g)
A unit of mass for light objects; 1000 g = 1 kg
Kilogram (kg)
A unit of mass for heavier objects; 1 kg = 1000 g
Scale
An instrument used to measure mass
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
How many grams are in 2.5 kg?
Question 2
Which unit would you use to measure the mass of a grain of rice?
Question 3
A bag of potatoes weighs 3 kg. A bag of sugar weighs 2000 g. Which is heavier?
Key Concepts Summary
- ●Grams (g) are used for light objects like a pencil or a strawberry
- ●Kilograms (kg) are used for heavier objects like a bag of flour
- ●1 kilogram = 1000 grams
- ●We use scales (balance scales or digital scales) to measure mass