Nat 5 - Formula and calculations

Front

What do compound names ending in '-ide' indicate?

Back

They contain the two elements indicated.

Front

What does the ending '-ite' or '-ate' in a compound name indicate?

Back

Oxygen is also present.

Front

How can chemical formulae for two-element compounds be written?

Back

Using valency rules and a Periodic Table.

Front

What do Roman numerals in a compound name indicate?

Back

The valency of an element.

Front

How can the chemical formula be determined from names with prefixes?

Back

The prefixes indicate the number of each type of atom present.

Front

What does the chemical formula of a covalent molecular substance represent?

Back

The number of each type of atom present in a molecule.

Front

What does the formula of a covalent network represent?

Back

The simplest ratio of each type of atom in the substance.

Front

What are ions containing more than one type of atom referred to as?

Back

Group ions.

Front

How can chemical formulae be written for compounds containing group ions?

Back

Using valency rules and the data booklet.

Front

What do ionic formulae represent?

Back

The simplest ratio of each type of ion in the substance and can show the charges on each ion, if required.