Across
- 3. a single particle of matter made out of two or more atoms joined together can chemically, that's how you do it
- 6. discovered that atoms have a nucleus.
- 7. a scientific explanation of the structures of a atom, and how they interact with other atoms.
- 9. this has a positive charge
- 11. discovered all substances are made up off atoms
Down
- 1. discovered electrons and they exist in every type of atom
- 2. this has no charge
- 4. matter that is made up of only one kind of element
- 5. negative charge
- 8. is a substance made out of two or more types of atoms that are chemically
- 10. the smallest unit into which a element can be divided, and still retain all of the properties of that element has.