how can you prove that melting of wax is a physical change and formation of curd is chemical change
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when wax candle is melt it doesnt change into a new substance we can again make it as a ne candle.
where as once curd is formed it can not be change into milk
where as once curd is formed it can not be change into milk
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1 what is the main reason of fludity og liquid?
of liquid
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2 carbon di-oxide can be gound as liquid as well as gaseous state. how
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you can prove them as:
melting of wax is a physical change because after melting the wax if we let it cool it becomes solid again
formation of curd is a chemical change because it involves a bacterium called lactobacillus which increases the acidity of the milk which can't be brought back to its original condition
melting of wax is a physical change because after melting the wax if we let it cool it becomes solid again
formation of curd is a chemical change because it involves a bacterium called lactobacillus which increases the acidity of the milk which can't be brought back to its original condition
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