I’m sure the examples in the aforementioned content have clarified what a chemical change actually is. Pyrolysis of alkane to produce alkenes and ethylene dichloride to produce PVC are good examples of chemical changes. In this process, the organic molecules like heavy hydrocarbons are broken down into simpler ones (breaking the chemical bond) in the presence of high energy and light. One of the most complex chemical change is cracking of hydrocarbons.So, next time you observe fruits ripening, try to find out the chemistry associated with it. The process is further accentuated by carbides and ethylene gas. This takes place when the enzymes start degrading the biological substances contained in the fruits.
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