A fundamental concept in science is that mass is always conserved. Mass is a measure of how much matter (how many atoms) make up an object. Mass cannot be created or destroyed, it can only change form.
Materials: paper, lighter or matches with adult help
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When you eat a banana, the matter is converted into energy. Ignite a sheet of paper and the paper molecules combine with oxygen through a chemical change and turn into smoke and ash.
Learn more about this concept in Unit 3.
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