grheasetta1nisperTh grheasetta1nisperTh

30-06-2016
Physics

contestada

When an effervescent tablet is dropped in water, what indicates that a chemical change is occurring?
a. the evolution of a gas
b. the condensation of a gas
c. the melting of a solid
d. the subliming of a solid

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RaisaSalsabil RaisaSalsabil

01-07-2016

I think it is a. the evolution of a gas

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