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- 1. Multiple Choice
What is the left part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Products
Yields
Chemical equation
- 2. Multiple Choice
What is the right part of a chemical equation called?
2H2 + O2 ---> 2H2O
Reactants
Products
Yields
Chemical Equation
- 3. Multiple Choice
What is the total number of atoms present in 5Na3PO4?
5
40
55
8
- 4. Multiple Choice
How many Mn atoms are found in the following compound?
2MnO4
1
4
2
8
- 5. Multiple Choice
What is the little number after an element in a chemical equation called?
Example: H2
Coefficient
Subscript
Atom
Equation
- 6. Multiple Choice
Is the following equation balanced?
Al + O2 ---> 2Al2O3
YES
NO
- 7. Multiple Choice
What is the number before a chemical formula called?
Example: 2H2 + O2 ---> 2H2O
Coefficient
Subscript
Atom
Equation
- 8. Multiple Choice
How many elements are in C6H12O6?
1
3
2
4
- 9. Multiple Choice
Which of the following equations are correctly balanced?
12CO2 + H2O ---> C6H12O6 + O2
CO2 + 9H2O ---> C6H12O6 + O2
CO2 + H2O ---> 3C6H12O6 + O2
6CO2 + 6H2O ---> C6H12O6 + 6O2
- 10. Multiple Choice
Balance this equation:
H2 + Cl2 ---> HCl
It is balanced.
3H2 + Cl2 ---> 6HCl
H2 + Cl2 ---> 2HCl
H2 + 3Cl2 ---> 6HCl
- 11. Multiple Choice
Balance this equation:
HgO ---> 2Hg + O2
It is balanced.
2HgO ---> Hg + O2
2HgO ---> 2Hg + O2
HgO ---> Hg + 2O2
- 12. Multiple Choice
Complete the sentence.
During a chemical reaction, atoms ________.
can appear
get rearranged
can disappear
stop moving and vibrating
- 13. Multiple Choice
What is a coefficient?
The small number on the right of the chemical symbol.
The number in between the chemical symbols.
The large number in front of a chemical formula.
The number behind a chemical formula.
- 14. Multiple Choice
What is the Law of Conservation of Mass?
It states that matter cannot be created or destroyed.
It states that matter can be created or destroyed.
It states that energy cannot be created or destroyed.
It states that sound can be created or destroyed.
- 15. Multiple Choice
How many HCl molecules do you need to balance this equation? Mg + __HCl ---> MgCl2 + H2
1
3
2
4
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