Month: November 2016

Calcium compounds

Carbonates are bases but not alkali, so they turn universal indicator blue or purple. Carbonates react with acids to form … More Calcium compounds

Learning mat on Carbon compounds

Hydrocarbons are made by the combination of carbon and hydrogen. Main source of hydrocarbons is petroleum(crude oil)   Share List

Learning Mat on Phosphorus and its allotropes

Learning Mat on Phosphorus and its allotrope 1.     How many protons and electrons does phosphorus atom have? 2.     Write the … More Learning Mat on Phosphorus and its allotropes