Difference between revisions of "Chemical Formula"

Revision as of 10:25, 6 December 2018

A Chemical Formula is a simple way to show the number and type of atoms in a chemical.

Singular Noun: Chemical Formula

Plural Noun: Chemical Formulae

Chemical Formulae show which elements are in a molecule.

The number of each element in a molecule is shown with a number written just after and lower than the element.

H₂O	CO₂	CH₄	CH₅OH

Water has 2 Hydrogen atoms and 1 Oxygen atom.	Carbon Dioxide has 1 Carbon atom and 2 Oxygen atoms.	Methane has 1 Carbon atom and 4 Hydrogen atoms.	Ethanol has 2 Carbon atoms, 6 Hydrogen atoms and 1 Oxygen atom.

A Chemical Formula is a way to show the numbers of atoms of each element in a chemical.

Singular Noun: Chemical Formula

Plural Noun: Chemical Formulae

Chemical Formulae show which elements are in a molecule.

The number of each element in a molecule is shown with subscript after that element.

@@ Line 27: / Line 27: @@
 | style="height:20px; width:200px; text-align:center;" |[[Ethanol]] has 2 [[Carbon]] [[atom]]s, 6 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] [[atom]].
 |}
+==Key Stage 4==
+===Meaning===
+A [[Chemical Formula]] is a way to show the numbers of [[atom]]s of each [[element]] in a [[chemical]].
+: Singular [[Noun]]: '''Chemical Formula'''
+: Plural [[Noun]]: '''Chemical Formulae'''
+===About Chemical Formulae===
+: '''Chemical Formulae''' show which [[element]]s are in a [[molecule]].
+: The number of each [[element]] in a [[molecule]] is shown with subscript after that [[element]].
+*MgBr<sub>2</sub>: [[Magnesium Bromide]] with one [[Magnesium]] [[atom]] and two [[Bromine]] [[atom]]s.
+*CO<sub>2</sub>: [[Carbon Dioxide]] with one [[Carbon]] [[atom]] and two [[Oxygen]] [[atom]]s.
+*Li<sub>2</sub>O: [[Lithium Oxide]] with two [[Lithium]] [[atom]]s and one [[Oxygen]] [[atom]].