Download a) air c) milk f) beer

3.1
What type of mixture (homogeneous or
heterogeneous) is each of the following:
a) air
b) vinegar
c) milk
d) paint
e) gatorade (the yummy blue kind!!)
f) beer
CHEM 101 Lecture 3
3:2
Lavoisier
Famous Chemists
Dalton
Gay-Lussac
Avogadro
CHEM 101 Lecture 3
3:3
Law of Multiple Proportions:
When two elements form more than one
compound, the masses of one element in these
compounds for a fixed mass of the other element
are in ratios of small whole numbers.
Are you as smart as Dalton?
Data:
Compound A
Compound B
Amount N
1.206 g
1.651 g
Amount O
2.755 g
4.714 g
What is the ratio of oxygen in the two compounds for
a fixed amount of nitrogen?
Bonus question:
Give possibilities for the compounds.
CHEM 101 Lecture 3
3:4
Dalton’s Atomic Theory (in his own words):
Atomic Theory – An explanation of the structure of
matter in terms of different combinations of very
small particles.
1. All matter is composed of indivisible atoms. Am
atom is an extremely small particle of matter that
retains its identity during chemical reactions.
2. An element is a type of matter composed of only
one kind of atom.
3. A compound is a type of matter composed of two
or more elements chemically combined in fixed
proportions.
A chemical reaction consists off the rearrangement
of atoms present in the reacting substances to give
new chemical combinations present in the substances
formed by the reaction.
CHEM 101 Lecture 3