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Science-Bonding
| Term | Definition |
|---|---|
| Ionic Bonding | Atoms lose or gain electrons, so their outer shell is completely full. |
| Ionic compounds- regular lattice structure | -Giant ionic lattices -Form a closely packed regular lattice -very strong electrostatic forces of attraction- oppositely charged ions |
| Ionic compounds- Similar properties | - high melting points -high boiling points - strong attractions - ionic compounds melt- ions free to move& carry electric current -dissolve in water easily - ions separate& are free to move in the solution so they'll carry electric current |
| Isotopes | Different atomic forms of the same element- same number of protons but different number of neutrons |
| Proton charge -> | +1P |
| Neutron charge -> | +1N |
| Electron charge -> | Very small/ negligible |
| 23 Na 11 | -mass number= big number -atomic number= little number |
| Number of neutrons? | Subtract the atomic number from the mass number |
| Covalent bonding | -sharing electrons with other atoms - only share electrons in the outer shell -both atoms have full outer shells |