Fields of chemistry
Scientific method:
a method of procedure that has characterized natural
science since the 17th century, consisting in systematic
observation, measurement, and experiment, and the
formulation, testing, and modification of hypotheses.
Variables
made up of two or
more different
substances which
are mix but are
combined chemically
Can write a symbol
Or formula
Ag
CO2
homogeneous mixture is a
solid, liquid or
gaseous mixture that has the
same proportions of its
components throughout a
given sample (or multiple
samples of different
proportion)
heterogeneous mixture is made of
different substances that remain
physically separate. Heterogeneous
mixtures always have more than one
phase (regions with uniform
composition and properties).
A mixture of sand and sugar is
aheterogeneous mixture.
Density is a derived unit
• Irregular shaped objects use water displacement to find volume
• Uniform objects can be measured directly to find volume
The gold foil experiment demonstrated (according to Rutherford) that
most of an atom is empty space (therefore 99.995% non-reflected αparticles) with a very small positively charged nucleus in the middle
(responsible for deflecting 0.005% of all α-particles).
Lead can only stop gamma radiation
Fission
Parts of a wave
c=speed of light
m/s
h= 6.626 × 10-34 m2 kg / s
Electron Configuration
Orbital
Diagrams
Ionic radius change
Mole example
More Mole examples
Math …. Metric dimensional analysis
Mole Calculations
(Weighted) Average atomic mass (amu’s)