Chemistry

14 March, 16:43

1) Which of the following is the best example of a physical change?

A) Sugar Dissolving in tea

B) Firefly Glowing

2) In the combustion of ethane, what is/are the reactants?

C2H6 + O2 = => CO2 + H2O

A) C2H6 and O2

B) CO2 and C2H6

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