Which of the following are chemical changes? Check all that apply. water is boiled gasoline is...

Question

Question

Which of the following are chemical changes? Check all that apply.

water is boiled

gasoline is evaporated

gasoline is burned

water is heated up

water is frozen

Answer 1

Answer #1

water is boiled -> physical change

gasoline is evaporated > physical change

gasoline is burned --> this is a chemical change since it can't be done backwards. gasoline goes as CO2 and H2O

water is heated up > physical change

water is frozen > physical change

Answer 2

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