Unit B 2.2 Flashcards
1
Q
What were John Dalton’s symbols?
A
He developed a new set of symbols in the early 1800s to improve communication between chemists. His symbol idea was improved on by Jöns Berzelius
2
Q
What is atomic mass?
A
The mass of one atom in an element
3
Q
What is atomic mass is measured in?
A
Atomic mass units (amu)
4
Q
What is the law of octaves?
A
After intervals of eight elements similar chemical/physical properties reappear
5
Q
How did Dimitri Mendeleev revise the organization of atoms?
A
By collecting the elements known at the time and arrange them according to their properties it a Sauter like table. By sorting in arranging the elements he was able to identify gaps were elements not yet discovered would fit
