Free Printable Chemical Equations

1.

$F_2$ + $I_2$ $\longrightarrow$ $F_2$ $I_3$

a)

4 F +3 $I_2$ = 2 $F_2$ $I_3$

b)

$2F_2$ + $3I_2$ $\rightarrow$ $2\ F_2$ $I_3$

c)

4F + 6I $\rightarrow$ $10FI_3$

d)

$I_2$ + $3\ F_2$ $\rightarrow$ $3\ IF_3$

2.

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

a)

3

b)

6

c)

12

d)

24

3.

Element or compound?
H₂O

a)

element

b)

compound

4.

Balance this equation...
HgO --> Hg + O₂

a)

It is balanced

b)

2HgO --> Hg + O₂

c)

2HgO --> 2Hg + O₂

5.

Balance this equation...
$H_2$ + $Cl_2$ $\rightarrow$ $HCl$

a)

It is balanced

b)

3H₂ + Cl_{2 -->}6H₂Cl

c)

H₂ + Cl_{2 -->}2HCl

6.

Which are the reactants in the following reaction?

2Mg + O₂ ---> 2MgO

a)

Mg and O₂

b)

MgO

c)

Mg and MgO

d)

O₂ and MgO

7.

How many oxygens are in Al₂(SO₄)₃?

a)

4

b)

12

c)

7

d)

24

8.

$C_2H_6\ +\ 5O_2\ \rightarrow\ 2CO_2\ +\ 3H_2O_2$
Given this chemical equation, what are the REACTANTS?

a)

$C_2H_{6\ }and\ 5O_2$

b)

$2CO_2\ and\ 3H_2O_2$

9.

$C_2H_6\ +\ 5O_2\ \rightarrow\ 2CO_2\ +\ 3H_2O_2$
Given this chemical equation, what are the PRODUCTS?

a)

$C_2H_{6\ }and\ 5O_2$

b)

$2CO_2\ and\ 3H_2O_2$

10.

What does the number 4 represent in 4NH₃?

a)

Subscript

b)

Superscript

c)

Coefficient

11.

How many Nitrogen (N) atoms are in 4NH₃?

a)

4

b)

1

c)

3

d)

12

12.

How many Hydrogen (H) atoms are in 4NH₃?

a)

4

b)

1

c)

3

d)

12

13.

Is this equation balanced?

a)

Yes

b)

No

14.

Is this equation balanced?

a)

Yes

b)

No

15.

Is this equation balanced?

a)

Yes

b)

No

16.

To balance an equation you should:

a)

ONLY change subscripts.

b)

ONLY change coefficients.

c)

Change BOTH subscripts and coefficients.

17.

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO

a)

1

b)

2

c)

3

d)

4

18.

Which problem is balanced?
(Check ALL answers)

a)

PbO₂ + 2H₂

b)

SO₂ + H₂0 --> H₂SO₄

c)

2Na + 2H₂O --> 2NaOH + H₂

Chemical Equations

Total questions: 18

Worksheet time: 54mins

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