Across
- 4. smallest particle that makes up matter
- 6. positively charged and found in the nucleus
- 9. electrons are found here
- 11. negatively charged part of the atom
- 14. the chemical symbol is 'K'
- 15. has no charge and is found inside the atom
Down
- 1. this has an atomic number of 6
- 2. made up of different types of atoms
- 3. the twentieth element of the periodic table
- 5. made up of more than one atom
- 7. we need this gas to live
- 8. the chemical symbol is 'Na'
- 10. chemical formula is H2O
- 12. 118 and found in the periodic table
- 13. has an electronic configuration of 2,8