Keywords and Phrases - essential for exam use

these are just topic words that you should use in your answers, and these help you get those top marks you need.

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Key words and phrases you must know for chemistry C2
Electronic structure/ electronic configuration
Compound
Molecule
Ion
Bonding
Ionic
Covalent
Delocalised electrons
Nanoparticle
Mixture
Element
Relative formula mass
Percentage composition
Yield
Atom economy
Sustainable development
Ionic equations
Reversible
Energy transfers in chemical reactions
Exothermic
Endothermic
Equilibrium
Closed system
Catalyst
Collision theory
Rate of reaction
Concentrations (mol dm-3 = moles per decimetre cubed)
Surface area
Activation energy
Oxidation and reduction
Electrolysis
Electrode
Electrolyte
Half-equation
pH
Acid
Base
Salt
Neutralisation
Precipitation/precipitate
Soluble and insoluble
Aqueous
Solution
Mole and mole calculations
Empirical formula
Relative atomic mass

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