Ocr Flashcards
1
Q
Who was the second guy to put elements into a periodic table and how did he arrange them
A
Newlands They was called octaves -no gaps -mixed gasses and metals -compands included not all elements
2
Q
Who was the third guy to put elements into a periodic table? And how did he arrange them
A
Mendeleev
- gaps
- predicted properties
- groups
3
Q
Who proved Mendeleevs period table to be correct
A
Moseley
He found out atomic (proton) number is more important that atomic mass
Putting the elements in order of atomic number made meneleevs table to be correct
4
Q
Who was the first guy to put the elements in a periodic table
A
Wolfgang dobriner
He put them in groups of three
And did this by
Highest +lowest
———————— = middle
2
This has limitations
5
Q
What is he group one on the periodic table called
A
Alkenes
6
Q
What is the 7th group on the periodic table called
A
Halogens
7
Q
What is the formula for when a group 1 metal reacts with water
A
Alkene+water -> alkene+hydrogen
Oxide
