purity and formations Flashcards
1
Q
what is a pure substance
A
- single element or compound
- not mixed
- melts at specific temperature
- fixed boiling point
2
Q
how to know if a substance was impure
A
it melts and boils over a range of temperatures
3
Q
what is a formation
A
- complex mixture
- designed as a useful product
- quantity of each component is carefully measured
4
Q
example of a formation
A
fuels
cleaning products
paint
medicine
