Atoms_1

Atoms_1

1. Atoms are made up of all matters

   • Elements are made up of two or more atoms which cannot be broken down in two or more simpler substance
   • Compounds who are made up two or more types of elements which can be broken down in two or more simple substance
   • Molecule are made up of two or more atoms joined together

2. Ions

   • Ionic Compounds- In which ions are held together in a lattice structure by ionic bonds
     • E.i. Lithium (Li) + Carbon (C) = Lithium carnonate
   • Ionic Bonding- Occurs between METALS and NON-METALS
     • METALS lose or donate electrons to NON-METALS
       • NON-METALS gain or take electrons from METALS
   • A charged atom is called an " Ion "

3. Covalent

   • Relating to or denoting chemical bonds by sharing the electrons between atoms
     • Covalent Bonding- Involves the sharing of sharing of electron pairs between NON-METALS
       • Covalent Compounds- Substances that are formed when two or more elements joined by a covalent bond
         • E.i Carbon + Hydrogen share their electrons to be like their nearest noble gases