Which group have the most vigorous reactions as you go down the group?
Group 1 ☺
How was Newland's law of octaves arranged? and why?
Arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements.
What did Mendeleev do correct that made his periodic table good?
Put things in order of atomic mass
left gaps- for undiscovered elements
Why are group 1 electrons more reactive as you go down?
Because as you go down there are more shells. This means the 1 electron is further away from the positive nucleus this means that there is a weaker attraction so it can easily be lost and react with another substance
How do we test for Group 1 Alkali metals and what are there common traits?
Test for hydrogen by flame "pop" test
Low boiling and melting point as you go down the grid.