Across
- 4. Particles inside the nucleus that have no charge
- 5. This element has an electron configuration of 2,8,3
- 6. A name for the 'ingredients' in a chemical reaction
- 9. Table used to arrange all the known elements
- 11. Atoms with the same atomic number but different mass numbers
- 13. A substance made of only one type of atom
- 15. This element is given the chemical symbol K
- 16. Increasing this increases the particle's kinetic energy
- 17. Name of the compound with the formula NaOH
Down
- 1. This element has an atomic number of 8
- 2. An atom which has gained or lost electrons in order to have a full outer shell of electrons
- 3. The chemicals that are formed by a chemical reaction
- 7. This poisonous gas is given the chemical symbol Cl-
- 8. The middle of an atom is called this
- 10. Made of two or more elements chemically combined
- 12. Basic building block of all matter
- 14. This element has an atomic number of 6