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- 1. Multiple ChoiceHow many Oxygens are in this molecule?
(OH)24123 - 2. Multiple ChoiceWhat are the smaller numbers that you CANNOT change in a chemical equation?CoefficientProductsReactantsSubscript
- 3. Multiple ChoiceWhat are the larger numbers that you CAN CHANGE in a chemical equation?CoefficientProductsReactantsSubscripts
- 4. Multiple ChoiceHow many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - 5. Multiple ChoicePb(NO3)2 + KI --> PbI2 + KNO3
What type of reaction is this?SynthesisDecompositionSingle ReplacementDouble Replacement - 6. Multiple Choice__Na + O2 -----> __Na2O
Type of reaction?
Balance it too. :)Synthesis, 2Na / 4Na2ODecomposition, 4Na / 2Na2OSynthesis, 4Na / 2Na2ODecomposition, 2Na / 4Na2O - 7. Multiple ChoiceWhat type of reaction is this?
__H2O2 ----> __H2O + O2SynthesisDecompositionSingle ReplacementCombustion - 8. Multiple ChoiceWhat law governs the balancing of chemical equations?Law of EnergyLaw of Conservation of Matter/MassLaw of GravityLaw of Matter Movement
- 9. Multiple ChoiceBalance this chemical reaction......?
__H2O2 ----> __H2O + O22H2O2 // 2H2O1H2O2 // 2H2O2H2O2 // 1H2OH2O2 // 2H2O - 10. Multiple ChoiceWhy is it called the Law of Conservation of Matter/Mass?Energy is created and destroyedEnergy is never created, nor destroyed-- it always movesEnergy moves between particlesEnergy stops moving at the end of the universe
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