Topic 3 Purity And Formulations Flashcards
What is a pure substance in chemistry
A substance that contains only one compound or element throughout the whole
When will a chemical melt or boil if it’s a pure substance
At a specific temperature
What does the closer you are measured value the actual melting or boiling point mean
The Purer it is
What will impurities of a sample do to its mp
Lower the melting point and increase the melting range of the substance
What will impurities in the sample due to the boiling point
Increase it and boil it a range of temperatures
What are formulations
Useful mixtures with this precise purpose that are made by following a formula
What is each component in a formulation present as
I measured quantity and contribute to the properties of the formulation so that it meets its required function
Paints a formulation is composed of
Pigment Give the paint colour
solvent Used to dissolve other components and alterviscosity
Binder Forms of film that hold the pigment in place after its been painted on
addictives - Add to further change The physical and chemical properties of the paint
Why are formulations important in the pharmaceutical industry
By altering the formulation of a pill it can be delivered to the correct part of the body at the right concentration that is consumable and has a long shelf life
Examples of every day formulations
Cleaning
products
fuels
cosmetics
fertilisers
metal alloys
