Grade 7 Science worksheet

Science worksheet

Science formulae of acid, bases and salts

Note:This is a mere support extended towards students. It does not mean to replace classroom solutions.

S#	Chemical  Name	Formula	Uses	Special Point
1	Acetic Acid	CH3COOH	Used in vinegar	Ethanoic acid
2	Hydrochloric acid	HCL	Clean washrooms	Muriatic acid
3	Nitric acid	HNO3	Used in making fertilizers and plastic Purification of gold	Spirit of niter or aqua fortis Highly corrosive
4	Sulphuric acid	H2SO4	Used in chemical industries	Oil of vitriol
5	Carbonic acid	H2CO3	Used in cold drinks	Carbonated water, acid of air, carbon di oxide solution
6	Phosphoric acid	H3PO4	Toothpaste, food industry	Weak acid also called orthophosphoric acid
7	Calcium hydroxide	Ca(OH)2	White wash walls	Slaked lime
8	Magnesium hydroxide	Mg(OH)2	Antacid, also used as food additive	Milk of magnesia
9	Sodium hydroxide	NaOH	Chemical pulping, tissue digestion, used in soaps	Caustic soda
10	Potassium hydroxide	KOH	Used as an electrolyte Used in making soft soaps. Used as ph control agent and food stabilizer Used in manicure as chemical cuticle removing agent	Caustic potash
11	Ammonium hydroxide	NH4OH	Used in window cleaners Used in making of Nylon	Aqua ammonia or ammonia water
12	Sodium bicarbonate	NaHCO3	Used in baking cakes, biscuits etc	Baking soda
13	Sodium Chloride	Nacl	Food preservation, taste agent in food, fire extinguisher, cleaning agent	Common salt
14	Ammonium chloride	NH4Cl	Used in metal work, medicine, food etc	Nushadir salt, Sal ammoniac
15	Magnesium sulphate	MgSO4	Food preparation, medicine, agriculture etc	Epsom salt
16	Copper sulphate	CuSO4	Used in pesticides,soil sterilization, disinfecting agent. It is toxic.	Cuprous sulfate or Dicopper sulfate
17	Calcium Carbonate	CaCO3	Used to make cement, health and dietary applications	Limestone, marble, chalk
18	Potassium  nitrate	KNO3	Use in production of nitric acid, meat processing, pharmacological use, fertilizer etc	Salt peter, nitrate of potash
19	Potassium chloride	KCl	Used in fertilizers, medical uses and culinary	Sylvite, muriate of potash
20	Iron oxide	Fe2O3.10H2O	Used in iron ores, pigments, catalysts and in thermite. Used as pigment in color concrete, paints and durables	Rust
21	Sodium carbonate	Na2CO3	Used in glass manufacturing, washing powders. It is also used as water softner	Soda ash, washing soda