Purity & Formulations Flashcards
1
Q
What is a pure substance?
A
- single element or compound
- not mixed with any other substance
2
Q
What are 3 examples of pure substances?
A
- Oxygen
- Water
- Sodium Chloride
3
Q
What are 3 examples of impure substances?
A
- Brine
- Air
- Milk
4
Q
What do pure substances have that impure substances don’t?
A
Fixed melting & boiling points
5
Q
How do you know if a water is pure?
A
- melts at 0 degrees
- boils at 100 degrees
6
Q
What is a formulation?
A
A mixture that has been designed as a useful product
7
Q
How are formulations made?
A
mixing components in carefully measured quantities to ensure product has required properties
8
Q
Give 3 examples of formulations
A
- lotions
- paints
- medecines
- fertilisers
- cleaning agents
- fuels
