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![Therearetwokindsofchanges—chemicalchangeandphysicalchan...]( "Therearetwokindsofchanges—chemicalchangeandphysicalchan...")
Therearetwokindsofchanges—chemicalchangeandphysicalchan...
问题详情：Therearetwokindsofchanges—chemicalchangeandphysicalchange.Inachemicalchange,thereisalwaysanewsubstance(物质)formed.Breakingupwaterintohydrogen(*气)andoxygen(氧气)isachemicalchange.Ineachofthe...
