New
New
Year 8

Naming compounds

I can name compounds from their chemical formulae.

New
New
Year 8

Naming compounds

I can name compounds from their chemical formulae.

Lesson details

Key learning points

  1. The name of a simple metal–non-metal compound ends '-ide' to indicate bonding has occurred.
  2. Some common groups of compounds are metal carbonates, metal sulfates and metal nitrates.
  3. Compounds of metal atoms bonded to -CO₃ are called metal carbonates.
  4. Compounds of metal atoms bonded to -SO₄ are called metal sulfates.
  5. Compounds of metal atoms bonded to -NO₃ are called metal nitrates.

Common misconception

Students often forget to change the non-metal name to either -ide or -ate.

Emphasise when the non-metal reacts with a metal it changes its name to -ide. It is -ate if the non-metal is also bonded to oxygen.

Keywords

  • Metal sulfate - Compound is made of a metal bonded to a sulfate group. The sulphate group is -SO₄.

  • Metal carbonate - Compound is made of a metal bonded to a carbonate group. The carbonate group is -CO₃.

  • Metal nitrate - Compound is made of a metal bonded to a nitrate group. The nitrate group is -NO₃.

Use many examples and each time stress that the non-metal changes its name and why.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

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6 Questions

Q1.
Complete this sentence: An element is made up of ...
one atom.
different types of atoms.
Correct answer: one type of atom.
Q2.
There are three types of elements; metals, non-metals and ...
Correct Answer: metalloids, metalloids.
Q3.
On the periodic table, most elements are in which state at room temperature?
Correct answer: solid
liquid
gas
Q4.
Match the word with the definition.
Correct Answer:Mixture,Different elements and / or compounds not chemically bonded together.

Different elements and / or compounds not chemically bonded together.

Correct Answer:Chemical bonding,How atoms combine together in a chemical reaction.

How atoms combine together in a chemical reaction.

Correct Answer:Compound,Made from two or more different elements chemically bonded together.

Made from two or more different elements chemically bonded together.

Correct Answer:Molecule,Made up from two or more non-metal atoms chemically bonded together.

Made up from two or more non-metal atoms chemically bonded together.

Q5.
Which of the following are examples of compounds?
Correct answer: CO₂
O₂
Correct answer: NaCl
Correct answer: CuSO₄
Mg
Q6.
Correctly order the description of the particle diagram from a to d.
An image in a quiz
1 - a = Compound
2 - b = Mixture of elements
3 - c = Element
4 - d = Mixture of compounds
Q6 UYSEG

6 Questions

Q1.
What is the ending used when naming a compound formed from two different elements bonded together?
-ice
Correct answer: -ide
-ate
-ite
Q2.
Compounds with names ending in '-ate' are made up of a metal, a non-metal and bonded together.
Correct Answer: oxygen
Q3.
How many atoms of each element are present in potassium nitrate (KNO₃)?
1 × potassium, 1 × nitrogen, 1 × oxygen
1 × potassium, 3 × nitrogen, 3 × oxygen
Correct answer: 1 × potassium, 1 × nitrogen, 3 × oxygen
3 × potassium, 3 × nitrogen, 3 × oxygen
Q4.
What elements would make up the compound copper sulfate?
copper and sulfur
copper, sulfide and oxygen
copper, sulfur and oxide
copper and sulfate
Correct answer: copper, sulfur and oxygen
Q5.
Order the following compound endings as those which would represent the following; an oxide, a carbonate, a nitrate, a chloride, a sulfide and sulfate.
1 - -O
2 - -CO₃
3 - -NO₃
4 - -Cl
5 - -S
6 - -SO₄
Q6.
Use the periodic table to help you match the compound to the correct name.
An image in a quiz
Correct Answer:KBr,potassium bromide

potassium bromide

Correct Answer:CuO,copper oxide

copper oxide

Correct Answer:NaNO₃,sodium nitrate

sodium nitrate

Correct Answer:CaS,calcium sulfide

calcium sulfide

Correct Answer:ZnSO₄ ,zinc sulfate

zinc sulfate

Correct Answer:MgCO₃,magnesium carbonate

magnesium carbonate

Q6 UYSEG