- Created by: Blackoutstudy
- Created on: 15-08-19 13:36
What is it?
A pure substance is a single element or compound not mixed with any other substance. Pure substances have specific melting and boiling temperatures. These can be used to distinguish pure substances from mixtures. A formulation is a mixture that has been designed as a useful product. Formulations are made by mixing the components in carefully measured quantities to ensure that the product has the required properties.
Can be used to separate mixtures. It involves a stationary phase and the mobile phase. The ratio of the distance moved by a compound can be expressed as its Rf value.
RF= distance moved by substance distance moved by solvent
Test for oxy
Glowing splint into a test tube for the splint relights
Test for hydrox
Sodium hydroxide solution can identity metal ions. Carbonates react with dilute acids. Sulfate ions produce with precipitate.