Chemical Bonding

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Chemical Bonding by Mind Map: Chemical Bonding

1. Definition

1.1. Process where atoms combine to form molecules

1.1.1. Each atom attains octet configuration

2. Covalent bonding

2.1. Formed between 2 non-metals

2.1.1. Both atmos need to gain valence atoms Both atmos share valence electrons instead of trading

2.2. Sharing of electrons

2.2.1. ''Shared'' electrons travel around the nuclei of both atoms To attain octet configuration

2.3. Simple molecular

2.3.1. Compounds formed Often liquid or gas at room temperature Low melting and boiling point Weak intermolecular forces Exit as neutral molecules (No ions) Do not conduct electricity when molet or aqueous Compound remains as same molecule in water and does not allow for free movement of electrons Can form multiple bonds Equals to eight minus group number Ten to be more flammable than ionic compounds Carbon and Hydrogen have similar electronegativities and are found together in most covalent compounds

2.4. Macromolecular

2.4.1. Compounds formed High melting point Strong covalent bonds in structure

3. Metallic bonding

3.1. Characteristics

3.1.1. Malleable Layers of atoms can slide easily over one another

3.1.2. Hardness Pure metals are weak and soft Alloys are much harder Alloys are mixtures of metals Orderly arrangement disrupted by atoms of another metal

3.1.3. Good electrical conductors Electric current consists of moving electrons

3.1.4. High melting point Molecular bonds are strong and hard to break

3.2. Metal consists of orderly arrangement of positive metal ions

3.2.1. Electron free to move about between ions

3.2.2. Surrounded by sea of electrons

4. Ionic bonding

4.1. Simple or complex ions

4.1.1. Simple ions Formed when an atom of an element loses or accepts electrons to form a charged particle

4.1.2. Complex ions Is a charged paritcle that consist of more than 1 atom of 1 or more elements

4.2. Compounds formed

4.2.1. Solid at room temperature

4.2.2. High melting and boiling point Strong force of attraction between molecules

4.2.3. Forms positive and negative ions

4.2.4. Conduct electricity when molten or aqueous Dissociation of compound in solutions allows free movement of electrons

4.2.5. Giant ionic lattice Electrostatic interaction between positive and negative ions

4.2.6. Usually water soluble

4.3. Between cations and anions

4.4. Loss/gain of electrons

4.4.1. To attain octet configuration

4.5. Formed between a metal and a non-metal

4.5.1. Metal atoms lose valence electrons

4.5.2. Non-metal atoms gain valence electrons