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Balancing Equations
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23 questions
Q. How many elements are in C6H12O6?
answer choices
1
2
3
4
Q. How many atoms of carbon (C) are in C6H12O6?
answer choices
3
6
12
24
Q. How many atoms are there TOTAL in:
H2SO4
answer choices
6
5
7
3
Q. The red numbers in the image below represent ________
answer choices
subscripts
coefficients
I don't know, and don't want to try
None of the answers are correct
Q. The blue numbers in the image below represent ________
answer choices
I don't know, and don't want to try
coefficients
subscripts
none of the answers are correct
Q. The substances at the beginning of a chemical equation are called the ____
answer choices
product
yield
chemical symbol
reactants
Q. In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
answer choices
Mg and O
MgO
Mg and MgO
O and MgO
Q. How many O's are in Al₂(SO₄)₃
answer choices
4
12
7
24
Q. Number of H in 3(NH₄)₂CrO₄
answer choices
4
2
8
24
Q. What does the Law of Conservation of Mass state?
answer choices
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. 
Q.

What is the right part of a chemical equation called...

H2 + O2 --> H2O

answer choices

Reactants

Products

Yields

Chemical Equation

Q.

What is the arrow in a chemical equation...

H2 + O2 --> H2O

answer choices

Reactants

Products

Yields

Chemical Equation

Q. Balance this equation...
HgO --> 2Hg + O2
answer choices
It is balanced 
2HgO --> Hg + O2
2HgO --> 2Hg + O2
I don't know...Oh well!
Q. Balance this equation...
Sb2S3 + O2 --> Sb + SO2
answer choices
It is balanced
Sb2S3 + 3O2 --> 2Sb + 3SO2
Sb2S3 + O2 --> 2Sb + SO2
I don't know...Oh well!
Q. Which of the following is an unbalanced equation?
answer choices
CaCO--> CaO + CO2
PbO+ 2H2-->2Pb + H2O
2Na+ 2H2O-->2NaOH + H2
CS+ 2O--> CO+ 2SO2
Q. When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
answer choices
charge
subscript
random number
coefficient
Q. Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
answer choices
4Fe + 3O2 -> 2Fe2O3
2 Fe + 3O2 -> Fe2O6
4 Fe + O6 -> 2Fe2O3
None of the options are correctly balanced.
Q. Is this equation balanced?
answer choices
yes
no
Not enough information
Q. A sealed test tube containing 8 grams of iron filings and 5 grams of sulfur is heated until the material in the test tube glows bright red.  What is the mass of products? 
answer choices
Mass is less than 13 grams
Mass is equal to 13 grams
Mass is greater than 13 grams
Mass cannot be measured
Q.

Balance this equation:

H2 + Cl2 ---> HCl

answer choices

It is balanced.

H2 + Cl2 ---> 2HCl

3H2 + Cl2 ---> 6HCl

H2 + 3Cl2 ---> 6HCl

Q. Which number should go in the blank?
Al(NO3)3 + _  NaOH -> Al(OH)3 + 3 NaNO3
answer choices
1
2
3
0
Q. Which number should go in the blank?
Mn + _ HNO3 → Mn(NO3)2 + H2
answer choices
1
2
3
0
Q.

Balancing this Equation,

____ Fe + ____ Cl2 → ____ FeCl3

answer choices

1, 2 → 2

2, 2 → 2

2, 3 → 2

3, 3 → 2

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