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Chemistry (Chemical reactions 2 (Acids and metals (Acids and metals…
Chemistry
Chemical reactions 2
Acid and bases (neutralisation reaction)
Neutralisation reaction link
Acids and metals
Acids and metals reaction link
Affect of pH on rust link
Reactions with oxygen
Metal and oxygen reaction link
Combustion of fuels (hydrocarbons) link
Atoms
Nucleus
Protons
Positive charge
Neutrons
Isotopes
Radioisotopes are unstable isotopes
Nuclear decay link
Half life is the time
taken for the original
material to reduce by half
Used for carbon dating
Neutral charge
Atomic symbols link
Electrons
Negative charge
Shells/Electron configuration
Max. 2, 8, 8, 2
Valence shell is the outermost, uncomplete shell
Ions
Postive ion (losing electrons) is a cation
Negative ion (gain electrons) is an anion
Chemical reactions 1
Energy exchange in reactions
Endothermic reaction link
Exothermic reaction link
pH
Tested with universal indicator
pH of 1-6 is an acid
Acids taste sour and can burn
pH of 7 is neutral
pH of 8-14 is a base (alkali)
Bases are bitter and feel 'slippery'
Periodic table
Arranged in groups and periods
Groups and periods link