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Across
- 3. A tool that makes very tiny things look bigger
- 5. Two or more atoms joined together
- 6. The amount of matter in an object
- 7. How often something happens in a given time
Down
- 1. An educated guess about what will happen in an experiment
- 2. A state of matter that spreads to fill any space
- 4. The slow process of living things changing over many years
- 5. Two or more substances mixed together but not chemically joined