Across
- 1. the lightest atom in the universe
- 4. when two or more atoms come together
- 7. a type of energy produced by the movement of electrons
- 12. the part of an atom that is positive
- 13. the steps scientists take to make discoveries
- 14. a metric unit of length that is smaller than an inch
Down
- 2. the part of an atom that is negative
- 3. a rock or piece of metal that can pull some metals towards itself
- 5. when you describe an object using words and numbers
- 6. the part of an atom that has no charge
- 8. a statement that says whether your hypothesis is correct or not
- 9. a chart that shows all the different types of atoms
- 10. a prediction about what will happen in an experiment
- 11. the information that scientists record during an experiment