Slide1 : Solubility of Salts
Slide2 : Question based on comic
Slide3 : Long long time ago…
People live by seaside,
Their food is tasteless…
Slide4 : The forest beside the seaside has ignited!
Slide5 :
Slide6 :
Slide7 :
Slide8 :
Slide9 :
Slide10 :
Slide11 :
Slide12 : Can you guess what are the crystals?
Slide13 : A) Salts
Slide14 : What is salt commonly used for?
Slide15 : Food flavouring!!!
Slide16 : Is salt only used in food flavouring? No!!!
Slide17 : (a) Uses of salt
Slide18 : 4 industrial uses of salt 1) Food Industry 2) Agriculture Industry 3) Chemical Industry 4) Medical Industry
Slide19 : 1) Food Industry Monosodium glutamate Food flavouring
Slide20 : 1) Food Industry Sodium bicarbonate (NaHCO3) Make cakes & bread
Slide21 : 1) Food Industry Sodium benzoate (C6H5COONa) Food preservative
Slide22 : Ammonium sulphate (NH4)2SO4 Ammonium nitrate NH4NO3 Ammonium phosphate (NH4)3PO4 Potassium chloride
KCl Fertiliser 2) Agriculture Industry
Slide23 : 2) Agriculture Industry Sodium arsenate (Na3AsO4) Copper(ll) sulphate (CuSO4) Mercury(l) chloride (HgCl) Pesticides
Slide24 : 3) Chemical Industry Sodium hypochlorite (NaOCl) Bleaching agent
Slide25 : 3) Chemical Industry Calcium carbonate (CaCO3) Making cement
Slide26 : 3) Chemical Industry Tin(ll) fluoride (SnF2) Toothpaste
Slide27 : 3) Chemical Industry Silver bromide (AgBr) Photo film processing
Slide28 : 3) Chemical Industry Sodium carbonate decahydrate (Na2CO3.10H20) Produce soda-lime glass
Slide29 : 4) Medical Industry Potassium chloride (KCl) Potassium deficient patients
Slide30 : Calcium sulphate hemihydrate (CaSO4.1/2H20) 4) Medical Industry Mold structure of teeth
Slide31 : Barium sulphate (BaSO4) 4) Medical Industry Detect stomach ulcers
Slide32 : (a) What is a salt?
Slide33 : 1) Salt
- ionic compound
- hydrogen ion, H+ from an acid
- replaced by a metal ion
- or an ammonium ion, NH4+
KCl + H2O HCl + KOH
Slide34 : (b) Soluble and insoluble salts
Slide35 : except except Nitrate salts Carbonate
salts Chloride
salts Sulphate salts All Sodium carbonate,
Na2CO3
Potassium carbonate,
K2CO3
Ammonium carbonate,
(NH4)2CO3
All other All All Silver chloride, AgCl
Lead(ll) chloride, PbCl2 Lead(ll) sulphate, PbSO4
Calcium sulphate, CaSO4
Barium sulphate, BaSO4