Reading Chemical Formulas

Question 1

What elements are present in KNO3?

Accepted Answer

potassium, nitrogen, and oxygen

Answer

krypton, neon, and oxygen

Answer

potassium, neon, and osmium

Answer

krypton, nitrogen, and osmium

Question 2

A bottle is labeled NaCl. What elements does the formula show?

Accepted Answer

sodium and chlorine

Answer

sodium and carbon

Answer

nitrogen and chlorine

Answer

nitrogen and carbon

Question 3

A mineral sample has the formula Fe2O3. What elements are in it?

Accepted Answer

iron and oxygen

Answer

fluorine and oxygen

Answer

iron and osmium

Answer

fluorine and osmium

Question 4

The formula Pb(NO3)2 appears on a chemical card. What elements are present?

Accepted Answer

lead, nitrogen, and oxygen

Answer

phosphorus, neon, and oxygen

Answer

lead, neon, and osmium

Answer

phosphorus, nitrogen, and osmium

Question 5

When reading CuSO4, what elements should a student list?

Accepted Answer

copper, sulfur, and oxygen

Answer

calcium, sodium, and oxygen

Answer

copper, sodium, and osmium

Answer

calcium, sulfur, and osmium

Question 6

A teacher writes AgNO3 on the board. What elements are named by the symbols?

Accepted Answer

silver, nitrogen, and oxygen

Answer

argon, neon, and oxygen

Answer

silver, neon, and osmium

Answer

argon, nitrogen, and osmium

Question 7

What elements are represented in AuCl3?

Accepted Answer

gold and chlorine

Answer

aluminum and chlorine

Answer

gold and carbon

Answer

aluminum and carbon

Question 8

The mineral cassiterite has the formula SnO2. What elements does SnO2 contain?

Accepted Answer

tin and oxygen

Answer

sulfur and oxygen

Answer

tin and osmium

Answer

sulfur and osmium

Question 9

A sample label shows WO3. What elements are in the formula?

Accepted Answer

tungsten and oxygen

Answer

vanadium and oxygen

Answer

tungsten and osmium

Answer

vanadium and osmium

Question 10

What elements are present in KMnO4?

Accepted Answer

potassium, manganese, and oxygen

Answer

krypton, magnesium, and oxygen

Answer

potassium, magnesium, and osmium

Answer

krypton, manganese, and osmium

Question 11

A formula card says NaHCO3. What elements does it include?

Accepted Answer

sodium, hydrogen, carbon, and oxygen

Answer

nitrogen, helium, carbon, and oxygen

Answer

nitrogen, hydrogen, calcium, and oxygen

Answer

sodium, helium, calcium, and oxygen

Question 12

In the formula FeS, what elements are shown?

Accepted Answer

iron and sulfur

Answer

fluorine and sulfur

Answer

iron and silicon

Answer

fluorine and silicon

Question 13

How many atoms of each element are in one formula unit of Ca(OH)2?

Accepted Answer

1 Ca, 2 O, 2 H

Answer

1 Ca, 1 O, 1 H

Answer

2 Ca, 1 O, 2 H

Answer

2 Ca, 2 O, 1 H

Question 14

For Al2(SO4)3, what atom counts are shown in one formula unit?

Accepted Answer

2 Al, 3 S, 12 O

Answer

2 Al, 1 S, 4 O

Answer

6 Al, 3 S, 4 O

Answer

6 Al, 1 S, 12 O

Question 15

A student reads Na2CO3. What are the atom counts in one formula unit?

Accepted Answer

2 Na, 1 C, 3 O

Answer

1 Na, 3 C, 3 O

Answer

1 Na, 1 C, 1 O

Answer

2 Na, 3 C, 1 O

Question 16

One formula unit of MgCl2 contains how many atoms of each element?

Accepted Answer

1 Mg, 2 Cl

Answer

2 Mg, 1 Cl

Answer

1 Mg, 1 Cl

Answer

2 Mg, 2 Cl

Question 17

What atom counts does the formula C6H12O6 show?

Accepted Answer

6 C, 12 H, 6 O

Answer

1 C, 2 H, 6 O

Answer

1 C, 12 H, 1 O

Answer

6 C, 2 H, 1 O

Question 18

The formula NH3 has no subscript after N. What atom counts does it show?

Accepted Answer

1 N, 3 H

Answer

3 N, 1 H

Answer

1 N, 1 H

Answer

3 N, 3 H

Question 19

In one formula unit of H2SO4, how many atoms of each element are present?

Accepted Answer

2 H, 1 S, 4 O

Answer

1 H, 4 S, 4 O

Answer

1 H, 1 S, 1 O

Answer

2 H, 4 S, 1 O

Question 20

A rust-related compound has formula Fe2O3. What atom counts are shown?

Accepted Answer

2 Fe, 3 O

Answer

3 Fe, 2 O

Answer

2 Fe, 2 O

Answer

3 Fe, 3 O

Question 21

For Pb(NO3)2, how many atoms of each element are in one formula unit?

Accepted Answer

1 Pb, 2 N, 6 O

Answer

1 Pb, 1 N, 3 O

Answer

2 Pb, 1 N, 6 O

Answer

2 Pb, 2 N, 3 O

Question 22

A formula unit is KClO3. What atom counts should be recorded?

Accepted Answer

1 K, 1 Cl, 3 O

Answer

3 K, 3 Cl, 3 O

Answer

3 K, 1 Cl, 1 O

Answer

1 K, 3 Cl, 1 O

Question 23

In K2Cr2O7, how many atoms of each element are represented?

Accepted Answer

2 K, 2 Cr, 7 O

Answer

1 K, 1 Cr, 7 O

Answer

1 K, 2 Cr, 1 O

Answer

2 K, 1 Cr, 1 O

Question 24

The formula (NH4)2SO4 describes one formula unit. What atom counts does it show?

Accepted Answer

2 N, 8 H, 1 S, 4 O

Answer

1 N, 4 H, 1 S, 4 O

Answer

1 N, 8 H, 2 S, 8 O

Answer

2 N, 4 H, 2 S, 8 O

Question 25

For Ca3(PO4)2, what are the atom counts in one formula unit?

Accepted Answer

3 Ca, 2 P, 8 O

Answer

3 Ca, 1 P, 4 O

Answer

6 Ca, 1 P, 8 O

Answer

6 Ca, 2 P, 4 O

Question 26

When NaHCO3 is decoded, how many atoms of each element are shown?

Accepted Answer

1 Na, 1 H, 1 C, 3 O

Answer

3 Na, 1 H, 3 C, 3 O

Answer

3 Na, 1 H, 1 C, 1 O

Answer

1 Na, 1 H, 3 C, 1 O

Question 27

In one formula unit of Al(OH)3, what atom counts are shown?

Accepted Answer

1 Al, 3 O, 3 H

Answer

1 Al, 1 O, 1 H

Answer

3 Al, 1 O, 3 H

Answer

3 Al, 3 O, 1 H

Question 28

A carbon dioxide molecule is written CO2. What atom counts does the formula show?

Accepted Answer

1 C, 2 O

Answer

2 C, 1 O

Answer

1 C, 1 O

Answer

2 C, 2 O

Question 29

Methane has the formula CH4. How many atoms of each element are in one molecule?

Accepted Answer

1 C, 4 H

Answer

4 C, 1 H

Answer

1 C, 1 H

Answer

4 C, 4 H

Question 30

One formula unit of P2O5 shows what atom counts?

Accepted Answer

2 P, 5 O

Answer

5 P, 2 O

Answer

2 P, 2 O

Answer

5 P, 5 O

Question 31

In 3H2O, how many hydrogen atoms are shown in all?

Accepted Answer

6

Answer

2

Answer

3

Answer

5

Question 32

A lab model shows 4CO2 molecules. How many oxygen atoms are represented altogether?

Accepted Answer

8

Answer

2

Answer

4

Answer

6

Question 33

In 2NaCl, how many sodium atoms are represented?

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 34

For 5NH3, how many hydrogen atoms are shown?

Accepted Answer

15

Answer

3

Answer

5

Answer

8

Question 35

In 2Ca(OH)2, how many oxygen atoms are represented in all?

Accepted Answer

4

Answer

2

Answer

3

Answer

6

Question 36

A particle diagram is labeled 3O2. How many oxygen atoms are shown?

Accepted Answer

6

Answer

2

Answer

3

Answer

5

Question 37

In 4Fe2O3, how many iron atoms are represented altogether?

Accepted Answer

8

Answer

2

Answer

4

Answer

12

Question 38

For 2Al2(SO4)3, how many sulfur atoms are shown in all?

Accepted Answer

6

Answer

3

Answer

5

Answer

12

Question 39

In 3CH4, what is the total number of atoms represented?

Accepted Answer

15

Answer

7

Answer

12

Answer

18

Question 40

A chemical equation includes 6HCl. How many chlorine atoms are represented?

Accepted Answer

6

Answer

1

Answer

5

Answer

12

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Reading Chemical Formulas

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Reading Chemical Formulas

Ways to Play

Device Games: Students play on their phones

Blast Go

Zombie Escape

Avalanche

Maze Blast

Cave Climb

Blast Out

Mystery Auction

Tour Guide

Food Truck Rush

Tug of War

Alien Blast

Glacier Rush

Board Games: Teacher-led, projected to the class

Like what you see?

More like this

Bug Blast

BlastRace

BlastQuiz

BlastBoard

Seek & Destroy

Mystery Blast

Checkers

Texas Hold 'Em

Da Bomb

Castle Siege

Hot Potato

Market Mayhem

King of the Hill

Bank Heist

Top Corner