Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Law of Conservation of mass
|
C+0=C0
|
|
|
Law of Definite Proportions
|
In any sample size of a compound…same proportion of each element + mass
|
|
|
Law of Multiple Proportions
|
3.) Law of multiple proportions: Compare 2 compounds w/ same 2 elements. Ex: Carbon Monoxide vs. Carbon dioxide same amount of one element… other elements mass will be (small) whole # ratio. 1 gram of carbon-
CO/1.33g CO2/2.66y- 1:2 NOT 1:1.5 |
|
|
Joseph john Tompson
|
Discovered electron using the cathode ray experiment
|
|
|
Robert Milliken
|
Measured charge of electron. made it able to discover mass of electron. Used 'plum pudding' model to show how electrons are evenly distributed.
|
|
|
Ernest Rutherford
|
Discovered the nucleus using the Gold foil experiment.
|
|
|
Democrius
|
Ancient greek who first discovered the Atom!
|
|
|
Aristotle
|
Didnt believe in the atom, thus chemistry was not studied for 2000 years.
|
|
|
John Dalton
|
Discovered Atomic Theory
|
|
|
Atomic Theory
|
1.)All matter is composed of atoms
2.) Atoms of the same element are identical 3.) Atoms cannot be subdivided or destroyed, created 4.) Atoms combine in whole number ratios 5.) In reactions, Atoms are combined, separated, or rearranged |
|
|
Avogadros Number
|
6.02x10^23
|
|
|
1Amu
|
1 Atomic mass unit
|
