Atoms,Compounds And Isotopes

Ionic Bonding
1. Metal atoms form positive ions, while non-metal atoms form negative ions. The strong electrostatic forces of attraction between oppositely charged ions are called ionic bonds.
  1. Metal atoms lose the electron, or electrons, in their highest energy level and become positively charged ions
  2. Non-metal atoms gain an electron, or electrons, from another atom to become negatively charged ions
2. Conducts electricity when molten or in solution.
3. Very Strong electrostatic force
4. High Melting Point And Boiling Point
Compounds are substances in which atoms of two or more elements are chemically combined.
Isotopes
1. Isotopes are different atomic forms of the same element which have the SAME number of PROTONS but DIFFERENT number of NEUTRONS
2. SAME atomic number
Covalent Bonding ( SHARING OF ELECTRONS)
1. Can only share electrons in outer shells
2. Structure
  1. Simple Molecular
    1. Very strong covalent bonds
    2. Forces of attraction is weak
    3. Low melting Point And Boiling
    4. DON'T conduct electricity as no ions or electrical charge
  2. Giant Covalent
    1. No Charged Ions
    2. Very Strong Covalent Bond
    3. High MTP and BP
    4. Diamond
      1. 4 Covalent Rigid Bonds
    5. Silicon Dioxide
      1. What sand is made of
    6. Graphite
      1. Each Carbon Atom Forms 3 Coavlent Bonds
        Creates Layers That Are Free To Slide
        Soft And Slippery
        Only metal which is good conductor of electricity and heat

Resource summary

	Created by Gurkiran Kang about 10 years ago