Across
- 4. Electrons travel in set orbits
- 6. Has a trunk
- 7. One of the first people to state that matter is made up of atoms was?
- 8. Has a negative charge
- 13. Large marsupial
- 14. How many protons does an atom of carbon have?
- 17. The base unit of a chemical element
Down
- 1. Who used the gold foil experiment?
- 2. Has the same number of protons but different number of electrons
- 3. What is also the same number as the atomic number?
- 5. Has no electric charger
- 8. What is made up of atoms
- 9. Likes to chase mice
- 10. Where are the protons and neutrons located in an atom?
- 11. Who proposed the plum pudding model?
- 12. Who is credited with the modern atomic theory?
- 15. Flying mammal
- 16. Man's best friend