CHEMISTRY GLOSSARY

The term combustible is often used to describe any material which will burn. However, conditions at which combustion will occur must be defined more accurately, for example a combustible liquid is 37.8 °C but below 93.3 °C. This allows a distinction to be made between combustible materials, which are fairly difficult to ignite, and flammable or highly flammable ones, which are far easier to ignite.