Lesson 1 - Types of Chemical Bonding (Structure and Bonding
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Atom
The smallest part of an element
Delocalised
Electrons that can move freely and are not held in shells
Electron
A subatomic particle with a negative charge and almost no mass
Element
Made of one type of atom
Ion
A charged atom which has either lost or gained electrons
Periodic table
A tabular representation of elements in order of atomic number
Compound
A substance made up of two or more elements chemically joined together
Where are Protons and Neutrons found
Nucleus of an atom
Where are electrons found
Shells orbiting the nucleus
Bonding
Atoms that transfer electrons whilst other atoms can share their electrons
What are the three strong chemically bonds that hold the elements in a compound together
Ionic Covalent Metallic
Ionic bonding
Particles opposite charged ions which attract each other. This bond occurs in compounds formed between metal and non metal atoms. (e.g Sodium Chloride)
Covalent bonding
Particles are atom that share pairs of electrons. These only occur in non metals (e.g oxygen)
Metallic Bonding
The particles are atoms that share delocalised electrons. (This only occurs in metallic elements and alloys) (Metallic = Metals only)
3 subatomic particles inside an atom
Electrons, Protons, Neutrons
Why do atoms form bonds
Full outer shell so they become stable