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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 ChoiceWhat is a coefficient?The small number on the right of the chemical symbol.The large number in front of a chemical formula.The number in between the chemical symbols.The number behind a chemical formula.
- 3. Multiple ChoiceWhat is the part of the chemical equation in green called?
Fe + S --> FeSproductsreactantsyieldchemical formula - 4. Multiple ChoiceWhat is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - 5. Multiple ChoiceWhat coefficient should be used to make the following equation balanced?
N2+O2--> _NO1234 - 6. Multiple ChoiceWhich problem is balanced?
(Check ALL answers)PbO2 + 2H2SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H2 - 7. Multiple ChoiceHow many elements are in C6H12O6?1234
- 8. Multiple ChoiceElement or compound?
H2Oelementcompound - 9. Multiple ChoiceHow many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - 10. Multiple ChoiceIs this balanced?
Al + O2 → 2Al2O3YesNo - Answer choicesTagsAnswer choicesTags