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Chemical Questions
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1 Wax= paraffin=hydrocarbon, 2 C20H42 + 61 O2 >> 40 CO2 + 42 H2O, C21H44 + 32 O2 >> 21 CO2 + 22 H2O, etc 2,3 because you have to ignite the hydrogen, then the reaction will go. Even the equation is not balance, it will go explosively. 4 because atom is make up of electron, proton and neutron, these are make up of particiles.
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Chemical Questions
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1. burning of wax changes to carbon dioxide and water, chemical equation 點寫? 2. hydrogen+oxygen change to water, 點解空氣中的hydrogen and oxygen 唔會變曬水? 3. chemical equation 要平衡, 實際上是否要平衡先有chemical reaction?即係只有H2+O2會唔會有H2O?? 4. particle 係 smallest, most elementary bit of matter, 點解唔係atom??最佳解答:
1 Wax= paraffin=hydrocarbon, 2 C20H42 + 61 O2 >> 40 CO2 + 42 H2O, C21H44 + 32 O2 >> 21 CO2 + 22 H2O, etc 2,3 because you have to ignite the hydrogen, then the reaction will go. Even the equation is not balance, it will go explosively. 4 because atom is make up of electron, proton and neutron, these are make up of particiles.
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