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| 1. |
When phosphorus burns in air it gives phosphorus pentraoxide . Balance the equation |
| Answer» The phosphorous gets mixed with the oxygen present in the air, which causes the formation of phosphorous pentaoxide, which is a new chemical composition and a change in state of matter. Thus it is a chemical change. The chemical properties of reactant and product has changed. It alters the composition of the matter. Chemical changes may or may not be reversible.\xa0 | |