Weight and Mass
⭐ MasteredMass is measured in grams and kilograms. 1,000 grams make a kilogram. A balance or scale is used to weigh things.
A litre of water has a mass of about 1 kilogram.
All about Weight and Mass
Mass is the amount of matter in an object. It is measured in grams and kilograms. A paperclip has a mass of about one gram, and 1,000 grams make one kilogram. Weight is the force of gravity acting on mass, although in everyday life people use the two words interchangeably.
A balance or scale is used to measure mass. Larger masses are measured in kilograms, while tiny amounts, such as medicine or a pinch of spice, are measured in grams or milligrams.
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Real-life uses of Weight and Mass
- Weighing fruit and vegetables at the shop
- Following a recipe that uses 250 grams of flour
- Checking the weight of a school bag
Frequently asked questions about Weight and Mass
What is the difference between mass and weight?
Mass is how much matter an object contains and stays the same everywhere. Weight is the force of gravity on that mass and changes on the Moon.
How many grams are in a kilogram?
1,000 grams.
How heavy is a typical apple?
About 150 to 200 grams, or roughly one-fifth of a kilogram.