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Selected topic Conservation of Mass Science · Matter & Materials · view full details

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Science·Matter & Materials·conceptual

Conservation of Mass

Measure and provide evidence that the total weight of matter is conserved regardless of the type of change (heating, cooling, or mixing)

Suggested ages 10–11

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Learning journey

Your child is exploring the fundamental nature of matter — learning that everything is made of tiny particles they can't see, and discovering that matter is conserved even when it changes form through heating, cooling, or mixing.

Evidence of understanding

State the principle that matter is neither created nor destroyed during physical or chemical changes
Describe an investigation weighing materials before and after a change to show mass is conserved
Explain why dissolved sugar still contributes to the total weight even though it can't be seen

Assessment prompt

If Conservation of Mass dissolves sugar in water, can they explain why the total weight of the water and sugar stays the same even though the sugar seems to disappear?

Standards alignment

5-PS1-2US · ngss-k5

5-PS1-2

Next Generation Science Standards (NGSS) K-5