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Reactions quiz
Five questions on Reactions. Answer all 5 to see your score. Questions are drawn from a bank of 15, so every attempt is different.
Question 1 of 5
Which is a sign of a chemical change?
Question 2 of 5
2H2O2 -> 2H2O + O2 is a:
Question 3 of 5
Zn + 2HCl -> ZnCl2 + H2 is a:
Question 4 of 5
Complete combustion of a hydrocarbon produces:
Question 5 of 5
Which compound is insoluble in water?