Lesson 2.3 - Practising Chemical Names and Formulas

Read What to Do on page 37 in your textbook. Then, complete the table below that is similar to the one on page 37. An example is provided to show you how to enter the answers appropriately.

Compound Name

Common Use

Chemical Formula

Name and Number of each Element in the Formula

Total number of Atoms in the Formula

Acetylsalicylic acid
(Aspirin®)

analgesic (pain killer)

C9H8O4(s)

carbon - 9
hydrogen - 8
oxygen - 4

9 + 8 + 4 = 21
calcium carbonate chalk

CaCO3(s)
sodium phosphate cleaner Na3PO4(s)
calcium chloride ice melting salt CaCl2(s)
monosodium glutamate (MSG) seasoning NaC5H8NO4(s)
hydrogen peroxide disinfectant H2O2(l)
glucose food (sugar) C6H12O6(s)
carbon dioxide carbonation in pop CO2(g)
freon-12 refrigerant CCl2F2(g)

Then, return here to continue this lesson.

 

 

Now complete the following table in which you are given the name and number of atoms in the compound. The first one is done for you.

Compound Name

Common Use

Chemical Formula

Name and Number of each Element in the Formula

Total number of Atoms in the Formula

octane

gasoline as fuel

C8H18(l)

carbon - 8
hydrogen - 18

8 + 18 = 26
sulphuric acid car battery acid

hydrogen - 2 sulphur - 1
oxygen - 4
nitroglycerin explosive

carbon - 3
hydrogen - 5 nitrogen - 3
oxygen - 9
nicotine natural chemical found in tobacco

carbon - 10
hydrogen - 14
nitrogen - 2
potassium metabisulphite sterilizing agent

potassium - 2
sulphur - 2
oxygen - 5
ethylene glycol antifreeze

carbon - 2
hydrogen - 6
oxygen - 2
vitamin D necessary vitamin

carbon - 28
hydrogen - 44
oxygen - 1

Then, return here to continue this lesson.

 

 

 

 

 

 

 

 

 

 

 

Answers to Questions:

Compound Name

Common Use

Chemical Formula

Name and Number of each Element in the Formula

Total number of Atoms in the Formula

Acetylsalicylic acid
(Aspirin®)

analgesic (pain killer)

C9H8O4(s)

carbon - 9
hydrogen - 8
oxygen - 4

9 + 8 + 4 = 21
calcium carbonate chalk

CaCO3(s)

calcium - 1
carbon - 1
oxygen - 3

1 + 1 + 3 = 5
sodium phosphate cleaner Na3PO4(s)

sodium - 3
phosphorus - 1
oxygen - 4

3 + 1 + 4 = 8
calcium chloride ice melting salt CaCl2(s)

calcium - 1
chlorine - 2

1 + 2 = 3
monosodium glutamate (MSG) seasoning NaC5H8NO4(s)

sodium - 1
carbon - 5
hydrogen - 8
nitrogen - 1
oxygen - 4

1+5+8+1+4 = 19
hydrogen peroxide disinfectant H2O2(l)

hydrogen - 2
oxygen - 2

2 + 2 = 4
glucose food (sugar) C6H12O6(s)

carbon - 6
hydrogen - 12
oxygen - 6

6 + 12 + 6 = 24
carbon dioxide carbonation in pop CO2(g)

carbon - 1
oxygen - 2

1 + 2 = 3
freon-12 refrigerant CCl2F2(g)

carbon - 1
chlorine - 2
fluorine - 2

1 + 2 + 2 = 5

 

 

Click to return to where you left off in this lesson.

 

 

 

 

 

 

 

 

 

 

 

Answers to Questions:

Compound Name

Common Use

Chemical Formula

Name and Number of each Element in the Formula

Total number of Atoms in the Formula

octane

gasoline as fuel

C8H18(l)

carbon - 8
hydrogen - 18

8 + 18 = 26
sulphuric acid car battery acid

H2SO4(l)

hydrogen - 2
sulphur - 1
oxygen - 4

2 + 1 + 4 = 7
nitroglycerin explosive C3H5N3O9(l)

carbon - 3
hydrogen - 5
nitrogen - 3
oxygen - 9

 3 + 5 + 3 + 9 = 20
nicotine natural chemical found in tobacco C10H14N2(s)

carbon - 10
hydrogen - 14
nitrogen - 2

 10 + 14 + 2 = 26
potassium metabisulphite sterilizing agent K2S2O5(s)

potassium - 2
sulphur - 2
oxygen - 5

 2 + 2 + 5 = 9
ethylene glycol antifreeze C2H6O2(l)

carbon - 2
hydrogen - 6
oxygen - 2

 2 + 6 + 2 = 10
vitamin D necessary vitamin C28H44O(s)

carbon - 28
hydrogen - 44
oxygen - 1

 28 + 44 + 1 = 73

 


Now, do Assignment 2B. Please page forward to access the computer-scored assignment.