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1. What is a chemical reaction?
A physical change A change in state A change in the arrangement of atoms None of the above
H2 + O2 -> H2O 2H2 + O2 -> 2H2O H2O -> H2 + O2 2H2O -> 2H2 + O2
Hydrogen gas and zinc chloride Oxygen gas and zinc chloride Hydrogen gas and zinc oxide Oxygen gas and zinc oxide
CaO + H2O -> Ca(OH)2 CaO + 2H2O -> Ca(OH)2 + H2 CaO + H2O -> CaH2O2 CaO + 2H2O -> CaH2O2 + H2O
Combination reaction Decomposition reaction Displacement reaction Double displacement reaction
KMnO4 + H2O2 -> K2MnO4 + 2H2O + O2 KMnO4 + 2H2O2 -> K2MnO4 + 2H2O + O2 KMnO4 + H2O2 -> K2MnO2 + 2H2O + O2 KMnO4 + 2H2O2 -> K2MnO2 + 2H2O + O2
Copper nitrate and silver metal Copper metal and silver nitrate solution Copper nitrate and silver nitrate Copper oxide and silver metal
NaCl + AgNO3 -> NaNO3 + AgCl NaNO3 + AgCl -> NaCl + AgNO3 NaCl + AgNO3 -> NaCl2 + Ag NaCl + AgNO3 -> NaAgNO3 + Cl
To conserve mass To conserve energy To conserve momentum To conserve charge
Your score = Score in percentage = You correctly answered questions number = Correct Answers 1 = Correct Answers 2 = Correct Answers 3 = Correct Answers 4 = Correct Answers 5 = Correct Answers 6 = Correct Answers 7 = Correct Answers 8 = Correct Answers 9 = Correct Answers 10 =
great quiz (i am literally in school rihgtn ow)
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1 comments:
great quiz (i am literally in school rihgtn ow)
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