4.3.1 - Molecules
When atoms join together by covalent bonding, they form particles called molecules. A molecule is a particle made up of two or more atoms joined together by covalent bonds.
The diagram below shows a molecule called ethanol. It is made up of two carbon atoms, six hydrogen atoms and one oxygen atom.
An ethanol molecule. It is made up of two carbon atoms, one oxygen atom and six hydrogen atoms joined by covalent bonds.
Molecules vary greatly in size. The smallest ones are made up of just two atoms. Ethanol is a fairly small molecule, consisting of nine atoms. There are some very large molecules which are made up of hundreds or even thousands of atoms.
Flashcards help you memorise information quickly. Copy each question onto its own flashcard and then write the answer on the other side. Testing yourself on these regularly will enable you to learn much more quickly than just reading and making notes.
What is a molecule?
4.3.2 - Displayed Formulae and Molecular Formulae
4.2.5 - Covalent Bonds and Full Outer Shells
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