Across
- 3. positively charged ion.
- 6. collection of elements found in group 18 of the periodic table
- 7. a particle with no charge
- 10. postivly charged particles
- 11. negatively charged ion.
- 12. elements found in group 17
- 16. atom found in group.
- 19. a bond that forms between an anion and cation.
- 20. molecule formed through covalent bonding
- 21. found on the left hand side of periodic table.
- 24. transfer of thermal energy
- 25. arrangement of electrons in an atom
- 27. found on the right hand side of periodic table.
- 28. Diagram that shows the arrangement of electrons and electron shells in an atom.
- 29. formed as a result of a chemical reaction
- 30. molecule that contains only carbon and hydrogen atoms
Down
- 1. found in group 2 of periodic table
- 2. outer most shell in an atom
- 4. A vertical list of elements a pure substance
- 5. A horizontal list of elements.
- 8. a comlecule that has 2 atoms
- 9. a bond formed when 2 or more atoms share electrons.
- 13. way to represent the electrons of an atom in a shell
- 14. negatively charged particle
- 15. the number of protons in an atom
- 17. smallest unit
- 18. an atom that has gained or lost electrons
- 22. table of arranged elements a pure substance with the same type of atom
- 23. a mixture of a solute dissolved in a liquid such as water.
- 26. a molecule that forms by anions and cations