Activity 1.1 Ncert Science class 10 Chemical reactions and Equations.
Brief Procedure:
Activity 1.1 asks us to burn Magnesium ribbon in a china dish and see what happens.
Observation:
Magnesium ribbon burns spontaneously, and white ash deposits on the china dish.
Explanation:
Magnesium is a highly reactive metal. It reacts spontaneously with oxygen present in the atmosphere to form white ash of Magnesium oxide with the liberation of energy.
2Mg(s)  + O2(g) ———> 2MgO(s)
Caution:
Magnesium can burn spontaneously like a cracker. Keep it away from the body during the experiment.
Next: Lead nitrate reaction with potassium iodide.Activity 1.2Â
Zinc granules reaction with acid.Activity 1.3.
See also:
Solved questions and activities of chapter 1 Chemical reactions and equations.
Nice explaination