1. It is an electrovalent compound of an element that has 3 shells and 2 valence
electrons
2. This green coloured salt gives an acidic gas on thermal
CSE legemistry
3. It is soluble salt that can be obtained when a metal and an alkali reacts.
4. This water soluble salt that does not decompose on heating.
5. This insoluble salt can be obtained by double displacement reaction.
(Chromium Chloride, Calcium Chloride, Lead (II) Chloride, Magnesium Chloride, Zinc Nitrate
Copper (II) Sulphate, Copper (1) Carbonate, Calcium Sulphate, Potassium Zincate, Sodium
Carbonate)
1 x 5 = 5
5
B. Identify the terms
Moc. below:
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1: An electrovalent compound always forms between metal and non-metal because there is a complete transfer of valence electrons from electro-positive metal to electronegtive non-metal.
2:
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