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                                    Vedika got very confused when she fund that as the candle burnt, it melted, became smaller and heat light and carbon dioxide was produced. A decomposition reaction also yields either two or more substances. Can you explain why they are different and why are they termed as chemical changes ? [3 MARKS] | 
                            
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Answer» Vedika got very confused when she fund that as the candle burnt, it melted, became smaller and heat light and carbon dioxide was produced. A decomposition reaction also yields either two or more substances. Can you explain why they are different and why are they termed as chemical changes ? [3 MARKS]  | 
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