Across
- 7. the tiniest energy dense particle in an atom
- 8. energy levels surrounding and atoms nucleus where electrons are located
- 9. a tiny particle inside the centre of an atom. They make up most of the weight of an atom but are still very small.
- 10. the central part of an atom that contains protons neutrons.
Down
- 1. number how many protons neutrons and electrons are in a element
- 2. what is number 1 on the periodic table
- 3. what is the newest element in the periodic table
- 4. number one one eight
- 5. an element named after a scientist
- 6. metals have a shiny appearance due to their ability to reflect light