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- 1. Multiple Choice
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Atom
Subscript
Equation
- 2. Multiple Choice
What is the Law of Conservation of Mass?
It states that matter cannot be created or destroyed.
It states that energy cannot be created or destroyed.
It states that matter can be created or destroyed.
It states that sound can be created or destroyed.
- 3. Multiple ChoiceHow many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - 4. Multiple ChoiceWhat is the left part of a chemical equation called?
2H2 + O2 --> 2H2OReactantsProductsYieldsChemical Equation - 5. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 6. Multiple ChoiceHow many Aluminum are in Al2O3?325
- 7. Multiple ChoiceHow many Sodium (Na) are in 6NaCl?1126
- 8. Multiple ChoiceWhat is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - 9. Multiple ChoiceWhich of the following equations are correctly balanced?12CO2 +H2O --> C6H12O6 + O2CO2 + 9H2O --> C6H12O6 + O2CO2 + H2O --> 3C6H12O6 + O26CO2 + 6H2O --> C6H12O6 + 6O2
- 10. Multiple ChoiceIs the following equation balanced?...
Al + O2 --> 2Al2O3Yes!No! - 11. Multiple ChoiceHow many elements are in C6H12O6?1234
- 12. Multiple ChoiceElement or compound?
H2OElementCompound - 13. Multiple ChoiceIs the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2Oyesno - 14. Multiple Choice
Cu +HNO3 --> Cu(NO3)2 + H2O + NO. How many Oxygen in product?
5
6
7
8
- 15. Multiple Choice
3 Ca3(PO4)2. How many O atoms in this expression?
4
6
8
12
24
- Answer choicesTagsAnswer choicesTags