Balancing of Chemical Equations

When balancing a chemical equation, you can only change _________, you can never change _______!

• coefficients, subscripts

• subscripts, coefficients

• formulas, subscripts

• coefficients, formula units

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

• 2, 6, 3, 2

• it is already balanced

• 4, 12, 3, 4

• 2, 1, 4, 5

Tags

NGSS.MS-PS1-5

Balance the following:

____ Fe + ____ Cl₂ → ____ FeCl₃

• 1,1,2

• 1,3,1

• 2,2,3

• 2,3,2

Tags

NGSS.MS-PS1-5

Balance this equation-
__P₄ + __O₂ --> __P₂O₃

• it is already balanced

• 2, 1, 3

• 1, 2, 3

• 1, 3, 2

Tags

NGSS.MS-PS1-5

Balance the equation:

c

e

f

5

4

3

2

6

1

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Balance the chemical equation.

f

b

a

1

4

8

3

7

6

2

5

9

10

Tags

MS-PS1-5

Balance the equation.

​ ​ (a)   NaCl                  →          ​ (b)   Na    +    Cl₂​

• 2

• 1

• 3

• 4

Tags

NGSS.MS-PS1-5

Balance this equation:

​ (a)   FeCl₂ + ​ (b)   Cl₂ --> ​ (c)   FeCl₃

• 2

• 1

• 3

• 4

Tags

NGSS.MS-PS1-5

In the equation, 2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O₂

• MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

The red numbers in the image represent

• subscripts

• coeffiecients

• roman numerals

• none of the answer options are correct