Babugiyadav758

Chemical Reaction : – Whenever a chemical change occurs we can say that a chemical reaction has taken place eg – Food gets digested in our body – Rusting of iron. Chemical Equation :– A chemical reaction can be expressed symbolically by using chemical equation eg magnesium is burnt into air to form magnesium oxide can be represented as Mg + O2 → MgO – We can observe or recognise a chemical reaction by observing change in state, colour, by evolution of gas or by change in te...