Across
- 4. part of an atom that has a negative charge
- 8. one kind of energy the sun gives off
- 9. a group of atoms bonded together
- 12. made of two hydrogens and one oxygen atom
- 13. something that has weight, you can touch it
- 15. the element that makes up all living creatures
- 16. the smallest unit of matter
- 17. the science of living things
Down
- 1. something that has no weight, like light, movement, or heat
- 2. another name for ethanol
- 3. something that holds atoms together in a molecule
- 5. a kind of energy that you sense with your eyes
- 6. part of an atom that has no charge
- 7. the science of atoms and molecules
- 10. the name of Werner's clown pleco
- 11. when you combine 2 chemicals and they turn into new chemicals
- 14. part of an atom that has a positive charge