Responsible for summarizing matter
First person to coin the term atom ("atomos")
Any substance of 2 or more parts is not an element, instead a compound
Father of modern chemistry, introduced experimentation, said an element only has one component, water is a compound, and a compound = two or more elements
Worked with a gas that made water when it was burned; Lavoisier names it hydrogen or "water former"
Worked with a gas that in the presence of water produced an acid, caused candles to burn brighter, and charcoal to burn hotter; Lavoisier names it oxygen or "acid former"
Found the mass ratio used to create water (8 grams oxygen + 1 gram hydrogen = 9 grams water)
First to postulate the atomic theory; thought that water was OH
2 L Hydrogen + 1 L Oxygen = 2 L Water; discovered that hydrogen and oxygen are diatomic elements
At constant temperature and pressure, equal volumes of gases contain the same # of particles
Did the cathode ray tube experiment and found that atoms have negative portions and leads to the plum pudding model of the atom (negative particles suspended in a positive field)
Did the gold foil experiment using radiation, gave us the proton
Discovered that neutrons have the same mass as protons, but are a neutral charge
Arranged the periodic table, and noticed that the elements have periodic behavior
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.