Free Printable Chemical Formulas Quiz

1.

A ___________ describes and represents a chemical reaction.

a)

chemical equation

b)

chemical symbol

c)

chemical formula

d)

product

2.

In a science class experiment, Isla and Elijah mix vinegar and baking soda. The chemicals they use BEFORE the reaction starts are called _____________.

a)

subscripts

b)

coefficients

c)

reactants

d)

products

3.

In a science class experiment, Lily and Arjun mixed vinegar and baking soda. The chemicals created AFTER this reaction are called _____________.

a)

products

b)

reactants

c)

coefficients

d)

subscripts

4.

In the chemical equation below, the product is....

Na + Cl ---> NaCl

a)

Na

b)

NaCL

c)

Cl

d)

NaCl

5.

What is the left part of a chemical equation called?
H_{2 +}O → H₂O

a)

Reactants

b)

Products

c)

Yields

d)

Chemical Equation

6.

What does the number ₃ represent in 4NH₃?

a)

Subscript

b)

Superscript

c)

Coefficient

7.

What does the number 4 represent in 4NH₃?

a)

Subscript

b)

Superscript

c)

Coefficient

8.

How many total atoms make up 4NH₃?

a)

4

b)

16

c)

3

d)

12

9.

How many total molecules is 4NH₃?

a)

4

b)

1

c)

3

d)

12

10.

In a chemical equation, the symbol that means dissolved in water is ____.

a)

(aq) - aqueous

b)

(g) - gas

c)

(l) - liquid

d)

(s) - solid

11.

How many TOTAL atoms are there in this molecule, $C_3H_8O_3$ ?

a)

8

b)

11

c)

14

d)

16

12.

How many TOTAL atoms are there in one molecule of glucose, $C_6H_{12}O_6$ ?

a)

6

b)

12

c)

18

d)

24

13.

How many TOTAL atoms are there in this molecule, $2C_{2_{ }}H_6$

a)

2

b)

8

c)

10

d)

16

14.

What is the total number of oxygen atoms in the molecule $Ca_3(PO_4)_2$ ?

a)

2

b)

4

c)

8

d)

12

15.

What is the total number of copper atoms in the molecule, $2Cu\left(NO_3\right)_2$ ?

a)

1

b)

2

c)

3

d)

4

16.

What is the total number of hydrogen atoms in the molecule, $3NH_4Br$

a)

3

b)

4

c)

12

d)

18

17.

Identify the coefficient for hydrogen (H₂) in the chemical equation $2H_2 + O_2 \rightarrow 2H_2O$

a)

1

b)

2

c)

3

d)

4

18.

Given the equation $4Fe + 3O_2 \rightarrow 2Fe_2O_3$ , how many iron (Fe) atoms are required to completely react with oxygen?

a)

2

b)

3

c)

4

d)

6

19.

In this chemical reaction, $2HgO(s) \rightarrow 2Hg(l) + O_2(g)$ , what is the state of matter for the mercury (Hg) produced?

a)

Solid

b)

Liquid

c)

Gas

d)

Aqueous

20.

What is the state of matter for water (H₂O) in the equation $2H_2O(l) \rightarrow 2H_2(g) + O_2(g)$ ?

a)

Solid

b)

Liquid

c)

Gas

d)

Aqueous

21.

In the reaction $N_2(g) + 3H_2(g) \rightarrow 2NH_3(g)$ , what is the state of ammonia (NH₃)?

a)

Solid

b)

Liquid

c)

Gas

d)

Aqueous

22.

What is the state of matter for carbon dioxide (CO₂) in the equation $CaCO_3(s) \rightarrow CaO(s) + CO_2(g)$ ?

a)

Solid

b)

Liquid

c)

Gas

d)

Aqueous

23.

Analyze the following equation: $CaCO_3(s) \rightarrow CaO(s) + CO_2(g)$ . What is the state of matter for calcium carbonate (CaCO₃) and calcium oxide (CaO)?

a)

Both are gases

b)

Both are solids

c)

One is a solid and the other is a gas

d)

One is a liquid and the other is a gas

24.

Convert the chemical equation $2Na + Cl_2 \rightarrow 2NaCl$ into a word equation.

Na = sodium / Cl₂ = chlorine / NaCl = sodium chloride

a)

2 molecules of Sodium plus chlorine produces 2 molecules of sodium chloride

b)

2 molecules of Sodium chloride produces 2 molecules of sodium plus chlorine

c)

2 molecules of Sodium plus carbon produces 2 molecules of sodium carbonate

d)

Sodium carbonate yields sodium plus carbon

25.

Convert the chemical equation

Mg (s) + 2HNO₃ (aq) --> Mg(NO₃)₂ (aq) + H₂ (g)

into a word equation.

Mg = magnesium / Mg(NO₃)₂ = magnesium nitrate

H₂ = hydrogen / HNO₃ = nitric acid

a)

2 molecules of Magnesium and hydrogen nitrate react to produce magnesium nitrate and 2 molecules of hydrogen.

b)

Solid magnesium and 2 molecules of nitric acid react to produce aqueous magnesium nitrate and hydrogen gas.

c)

Solid magnesium and nitric acid react to produce aqueous magnesium nitrate and hydrogen gas.

d)

Smooth magnesium and aquaceous nitrate acid react to produce aquaceous magnesium nitrate reacts with hydrogen gas.

26.

Convert the chemical equation for rust

4Fe (s) + 3O₂ (g) --> 2Fe₂O₃ (s)

into a word equation.

O₂ = oxygen / Fe₂O₃ = rust / Fe = iron

4 lines

27.

Convert the chemical equation for rust

2HgO (s) --> 2Hg (l) + O₂ (g)

into a word equation.

O₂ = oxygen / Hg = mercury / HgO = mercury oxide

4 lines

28.

Convert the chemical equation for rust

6CO₂(g) + 6H₂O(l) --> 6O₂ (g) + C₆H₁₂O₆(aq)

into a word equation.

CO₂ = carbon dioxide / H₂O = water

O₂ = oxygen / C₆H₁₂O₆= glucose

4 lines

29.

How confident are you with these concepts?

¿Qué tan seguro estás con estos conceptos?

Насколько вы уверены в этих концепциях?

(4 = very confident - 1 = I do not understand anything)

a)

1

b)

2

c)

3

d)

4

Chemical Formulas Quiz

Total questions: 29

Worksheet time: 22mins

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