| Question | Answer |
| 4 Steps of Scientific Method | observations
testing hypotheses
developing theories
scientific laws |
| Chemistry | study of the composition of matter and the changes that matter undergoes |
| Organic or inorganic | has to have carbon to be organic |
| Law of conservation of mass | in any physcal or chemical mass is never created |
| 3 states of matter | solid- definite shape and volume
gas-takes both shape and volume of its container
liquid-indefinite shape flow yet fixed volume |
| several indications of chemical reaction | transfer of energy color |
| Accuracy | close to the right answer |
| Precision | many times you get the same thing over and over again |
| atomic number | number of protons in the nucleus of an atom of an element |
| mass number | total number of protons and neutrons in the nucleus of an atom |
| atomic mass | weight average of the masses of the isotopes of an element |
| isotope | atoms of the same element that have the same atomic number but different atomic masses due to a different number of neutrons |
| democtritis | name atom |
| dalton | atomic theo |
| rutherford | nucleus |
| millikan | electric charger |
| chadwick | neutron |
| thomson | electron |
| bohr | energy level |
| atomic mass units are based on the------ One amu is equal to ------- | Carbon + 1/2 of Carbon 12 atom |
| modern model of the atom | mostly empty space |
| what is quantum | amount of energy need to mannel electron from one energy level to another |
| Describe each quantum number with word, symbol | Energy level (n) 1-7
Sub Level (l)
orbital (m)
Spin + or -1/2 |
| how many s,p,d,and f orbital are there | s=1
p=3
d=5
f=7 |
| How many electrons may be in each energy level | 1=2
2=8
3=18
4=32
5=50
6=72
7=98 |
| different types of chemistry | physical-area that deals with the mechanism rate and energy transfer
analytical chemistry-focuses on the composition of matter
biochemistry-processes that takes place in living organisms
inorganic- dont contain carbon
organic-contain carbon |
