Chemistry Unit 2

Grace Evans
Mind Map by Grace Evans, updated more than 1 year ago
Grace Evans
Created by Grace Evans about 6 years ago


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Chemistry Unit 2
1 Structure and Properties
1.1 Giant Ionic Structures
1.2 Simple Molecules
1.3 Giant Covalent Structures
1.4 Giant Metallic Structures
1.5 Properties of Polymers
1.6 Nanoscience
2 Structure and Bonding
2.1 Chemical Bonding


  • Elements react to form compounds by gaining or losing electrons Atoms of metals in Group 1 combines with atoms of non metals in Group 7 by transferring electrons to form ions that have the electronic structures of noble gases
2.2 Ionic Bonding


  • Ionic compounds are held together by strong forces between the oppositely charges ions. This is called ionic bonding. Ionic bonding occurs between metals and non metals. The ions form a giant structure or lattice. The strong forces of attraction act throughout the lattice.


  • We can use dot and cross diagrams to represent the atoms and ions involved in forming ionic bonds. In these diagrams we only show the electrons in the outermost shells of each atom or ion.   


  • Part of the giant ionic lattice (3D-network) of sodium and chlorine ions in sodium chloride The strong bonds between oppositely charges ions
2.3 Formulae of Ionic compounds


  • The charges on the ions in an ionic compound always cancel each other out The formula of an ionic compound shows the ratio of ions present in the compound Sometimes brackets are needed to shoe the ratio of ions in a compound, eg. magnesium oxide, Mg(OH)2
2.4 Covalent Bonding
2.5 Metals
3 Rates and Energy
3.1 How Fast ?
3.2 Collision Theory and Surface Areas
3.3 Effective Temperature
3.4 Effective Concentration and Pressure
3.5 Effective Catalysts
3.6 Exothermic and Endothermic Reactions
3.7 Energy and Reversible Reactions
3.8 Using Energy Reactions From Reactions
4 How Much?
4.1 The Mass of Atoms
4.2 Masses of Atoms and Moles
4.3 Percentages and Formulae
4.4 Equations and Calculations
4.5 The Yield of a chemical reaction
4.6 Reversible Reactions
4.7 Analysing Substances
4.8 Instrumental Analysis
5 Salts and Electrolysis
5.1 Acids and Alkilis
5.2 Makings Salts from Metals or Bases
5.3 Making Salts from Solutions
5.4 Electrolysis
5.5 Changes at the Electrode
5.6 The Extraction of Aluminium
5.7 The Electrolysis of Brine
5.8 Electroplating
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