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Other Sciences, Chemistry
9th -
12thgrade
Chemical Reactions: Types and Balancing
24 questions
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- 1. Multiple ChoiceWhat is the Law of Conservation of Mass?It states that no matter can be created or destroyed.It states that no energy can be created or destroyed.It states that matter can be created or destroyed.It states that no sound can be created or destroyed.
- 2. Multiple ChoiceAt the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?the product is doubledthe product is half the mass of the reactantsthe mass is the samethe mass changes depending on the reaction
- 3. Multiple ChoiceA + B → AB : is the general form for which reaction type?Double ReplacementSynthesisCombustionDecomposition
- 4. Multiple ChoiceWhich of the following is an example of synthesis?2Na + Br2 --> 2NaBr2KClO3 --> 2KCl + 3O22HgO + Cl2-->2HgCl + O2Cl2 + 2NaBr --> 2NaCl + Br2
- 5. Multiple ChoiceIdentify the type of reaction:
Ca + O --> CaODecompositionSynthesisDouble ReplacementCombustion - 6. Multiple ChoiceIdentify this type of reaction,
Cl2 + 2KI --> I2 + 2KClSynthesisSingle ReplacementDouble ReplacementDecomposition - 7. Multiple ChoiceWhich chemical reaction forms Carbon Dioxide and Water?Double ReplacementSingle ReplacementCombustionDecomposition
- 8. Multiple ChoiceWhich chemical reaction breaks down into 2 substances?Double ReplacementSingle ReplacementSynthesisDecomposition
- 9. Multiple ChoiceWhich reaction type is the following: 2AgF + CaCl2 --> 2AgCl + CaF2DecompositionSingle ReplacementSynthesisDouble Replacement
- 10. Multiple ChoiceWhich reaction type is the following: 2Na + CaF2 --> Ca + 2NaFDecompositionSingle ReplacementSynthesisDouble Replacement
- 11. Multiple ChoiceWhich of the following is the general formula for a decomposition reaction?A + B → ABAB → A + BAB + C → AC + BAB + CD → AC + BD
- 12. Multiple ChoiceWhich reaction type is the following: C5H10O4 + O2 --> CO2 + H2ODecompositionSingle ReplacementCombustionDouble Replacement
- 13. Multiple ChoiceWhich reaction type is the following: Fe + O2 --> Fe2O3DecompositionSingle ReplacementSynthesisDouble Replacement
- 14. Multiple ChoiceThis picture of a football is here for no reason.
Click CONTINUE to move on.CONTINUEI don't follow directions. - 15. Multiple ChoiceWhen balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balancedchargesubscriptrandom numbercoefficient
- 16. Multiple ChoiceWhat is a coefficient?The small number on the right of the chemical symbol.The large number to the left of a formula.
- 17. Multiple ChoiceWhat coefficient should be used to make the following equation balanced?
N2+O2--> _NO1234 - 18. Multiple ChoiceWhat goes in the missing blanks?
SnO2 + __ H2 → Sn + __ H2O5132 - 19. Multiple ChoiceIs the equation balanced?: 2H2O + O2 --> 4MgO + 3FeYesNo
- 20. Multiple ChoiceBalance this equation:
__Li + __Cl2 -> __LiCl2Li + Cl2 -> 4LiCl22Li + Cl2 -> LiCl22Li + Cl2 -> 2LiCl - 21. Multiple ChoiceBalance this equation...
HgO --> 2Hg + O2It is balanced2HgO --> Hg + O22HgO --> 2Hg + O2 - 22. Multiple ChoiceWhich of the following is an unbalanced equation?CaCO3 --> CaO + CO2PbO2 + 2H2-->2Pb + H2O2Na+ 2H2O-->2NaOH + H2CS2 + 2O2 --> CO2 + 2SO2
- 23. Multiple ChoiceFill in the missing coefficient to balance the equation: Mg + ___ HCl → MgCl2 + H21234
- 24. Multiple ChoiceWhich problem is balanced?PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2
- Answer choicesTagsAnswer choicesTags