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- 1. Multiple Choice
PCl5 + ___ H2O → ___ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
- 2. Multiple Choice
__ Al + __ FeO → Al2O2 + __ Fe
1, 1, 2
2,1,2
2, 2, 2
2,4,2
- 3. Multiple ChoiceMg + ___ HCl → MgCl2 + H21234
- 4. Multiple ChoiceWhich side of a chemical equation is the reactant side?Left (before the yields sign)Right (after the yields sign)
- 5. Multiple ChoiceWhich side of a chemical equation os the product side?Left (before the yields sign)Right (after the yields sign)
- 6. Multiple ChoiceWhich problem is balanced?PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2
- 7. Multiple ChoiceBalance this equation.
_SnO2 +_H2-->_Sn +_H2O1,1,2,11,2,1,11,2,1,21,2,2,1 - 8. Multiple ChoiceBalance this equation.
_CF4 + _Br2 -- _CBr4 + _F22,1,2,11,2,2,11,2,1,22,2,2,2 - 9. Multiple ChoiceWhat is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - 10. Multiple ChoiceWhat does the Law of Conservation of Mass state?Matter cannot be gained or lost in a chemical reaction.Matter can only be lost in a chemical reaction.Matter can only be gained in a chemical reaction.Matter can be gained and lost in a chemical reaction.
- 11. Multiple ChoiceIs the equation balanced?: 2H2O + O2 --> 4MgO + 3FeYesNo
- 12. Multiple ChoiceBalance this equation
_Al +_HCl --> _H2 +_AlCl32, 6, 3, 2it is already balanced4, 12, 3, 42, 1, 4, 5 - 13. Multiple ChoiceBalance this equation.
_CH4 + _O2 --> _CO2 + _H2O1,2,1,12,1,2,11,2,1,20,2,0,2 - 14. Multiple ChoiceBalance this equation.
_CF4 + _Br2 -- _CBr4 + _F22,1,2,11,2,2,11,2,1,22,2,2,2 - 15. Multiple Choice
Is this equation balanced?yesnoNot enough information - 16. Multiple ChoiceHow many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O32614
- 17. Multiple ChoiceWhen balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balancedchargesubscriptrandom numbercoefficient
- 18. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 19. Multiple Choice
The two sides of a chemical equation are called?
Reactants (left) and Products (right)
Ingredients (left) and Product (right)
Cations and Anions
Reactants (left) and Results (right)
- 20. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - Answer choicesTagsAnswer choicesTags