history of periodic table Flashcards
1
Q
what did Antoine-Laurent lavoisier discover
A
-described elements as ‘substances that cannot be broken down any further’
-created the first modern chemistry text book
-he included light as an element
2
Q
what did dobreiners triads discover
A
-his ‘law of triads’ where he grouped elements into triads when they had similar properties
3
Q
what did john newlands do
A
-devised a periodic table of elements in order of their atomic region
-created the law of octaves (7 octaves)
-ordered by atomic weight but reorganised them based off properties
