Quiz about Balancing Chemical Equations

Question 1

Which side of a chemical equation is the reactant side?

Accepted Answer

Left (before the yields sign)

Answer

Right (after the yields sign)

Question 2

Which side of a chemical equation os the product side?

Accepted Answer

Right (after the yields sign)

Answer

Left (before the yields sign)

Question 3

Balance this equation.
_SnO₂+_H₂-->_Sn +_H₂O

Accepted Answer

1,2,1,2

Answer

1,1,2,1

Answer

1,2,1,1

Answer

1,2,2,1

Question 4

What is the little number after an element in a chemical equation called.
Example: H₂

Accepted Answer

Subscript

Answer

Coefficient

Answer

Atom

Answer

Equation

Question 5

What does the Law of Conservation of Mass state?

Accepted Answer

Matter cannot be gained or lost in a chemical reaction.

Answer

Matter can only be lost in a chemical reaction.

Answer

Matter can only be gained in a chemical reaction.

Answer

Matter can be gained and lost in a chemical reaction.

Question 6

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

Accepted Answer

No

Answer

Yes

Question 7

Balance this equation
_Al +_HCl --> _H₂+_AlCl₃

Accepted Answer

2, 6, 3, 2

Answer

it is already balanced

Answer

4, 12, 3, 4

Answer

2, 1, 4, 5

Question 8

When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced

Accepted Answer

coefficient

Answer

charge

Answer

subscript

Answer

random number

Question 9

How many atoms of carbon (C) are in C₆H₁₂O₆?

Accepted Answer

6

Answer

3

Answer

12

Answer

24

Question 10

The two sides of a chemical equation are called?

Accepted Answer

Reactants (left) and Products (right)

Answer

Ingredients (left) and Product (right)

Answer

Cations and Anions

Answer

Reactants (left) and Results (right)

Question 11

How many atoms are there TOTAL in:
H₂SO₄

Accepted Answer

7

Answer

6

Answer

5

Answer

3

Question 12

Balance this equation.

__CF₄+ __Br₂--> __CBr₄+ __F₂

Accepted Answer

1,2,1,2

Answer

2,1,2,1

Answer

1,2,2,1

Answer

2,2,2,2

Question 13

Balance this equation.

__CH₄ + __O₂--> __CO₂+ __H₂O

Accepted Answer

1,2,1,2

Answer

1,2,1,1

Answer

2,1,2,1

Answer

0,2,0,2

Question 14

Balance this equation.

__Mg + __Cl₂--> __MgCl₂

Accepted Answer

already balanced

Answer

1, 2,1

Answer

2,1,1

Answer

1,1,2

Question 15

Balance this equation-
__P₄+ __O₂--> __P₂O₃

Accepted Answer

1, 3, 2

Answer

it is already balanced

Answer

2, 1, 3

Answer

1, 2, 3

Question 16

Balance this equation

__Zn +__HCl-->__ZnCl₂+__H₂

Accepted Answer

1,2,1,1

Answer

1,1,2,1

Answer

1,1,1,2

Answer

2,1,1,1

Question 17

__KNO₃ --> __KNO₂ + __O₂

What coefficients are needed to balance the reaction?

Accepted Answer

2, 2, 1

Answer

2, 3, 2

Answer

1, 2, 2

Answer

1, 3, 1

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