Across
- 2. a thing composed of seperate elements
- 3. a part of somthing abstract
- 7. 2 electrons shared between 2 atoms
- 10. contain equal number of protons but different number of neutrons
- 11. 2 electrons shared unequally between 2 atoms 2
- 12. attachment to somthing
- 13. formed from 2 oppisite charge ions
Down
- 1. an atom with a net electric charge
- 2. when bonded atom has more energy than seperated atom
- 3. a negitivley charged subatomic partical
- 4. same mass as a proton
- 5. a stable submatomic partical in all nuclei
- 6. the action of forming a united whole
- 8. one end is positive, one is negitive
- 9. Basic unit of matter