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Across
- 2. Carefully watching and noting what happens
- 6. The rate at which something speeds up
- 7. The molecule inside cells that carries instructions for life
- 8. The tendency of an object to stay still or keep moving
Down
- 1. A substance made of two or more elements bonded together
- 3. A sample of something used for study
- 4. Something in an experiment that can be changed or measured
- 5. A state of matter that holds its shape