Across
- 3. positively charged particle
- 5. element with 17 protons
- 6. First step in the scientific method
- 10. negatively charged particle
- 11. thing on the periodic table
- 13. element with 3 protons
- 14. same element, different number of neutrons
- 15. state of matter with no definite shape or volume
Down
- 1. homogeneous mixture
- 2. state of matter with a definite shape and volume
- 4. what class is this
- 7. 4th step in the scientific method
- 8. neuterally charged particle
- 9. neutron+proton
- 12. state of matter with no definite shape but a definite volume