chemical analysis - purity and formulations Flashcards
(9 cards)
1
Q
what can a pure substance be
A
- a single element
- singe compound
2
Q
what is a pure substance
A
a substance that is not mixed with any other substance
3
Q
what is the melting/boiling point like of a pure substance
A
a fixed point
4
Q
what is the melting/boiling point like of an impure substance
A
melt and boil over a range of temperatures
5
Q
melting point of pure water
A
0 degrees C
6
Q
boiling point of pure water
A
100 degrees C
7
Q
what is a formulation
A
a complex mixture that has been designed as a useful product
8
Q
why in a formulation is the quantity of each component carefully measured
A
so that the product has the properties we need
9
Q
examples of formulations
A
fuels, cleaning products, paints, medicines, alloys, fertilizers and food
