Topic 1 Periodic Table Flashcards
What are elements in group 1 refered to
Alkali metals
What happens as you move down group 1
the reactions of alkali metals become quicker and more vigorous as The number of electron shells increases meaning there is a greater distance between the outer electron and the nucleus.
What happens when a metal floats on water
Becomes (metal) hydroxide
What group are the haolgens located in
Group 7
Why are halogens very reactive
Easily accept an electron into their outer shell
What are diatomic molecules
Molecules made of pairs of atoms
How are salts formed
When a metal atom transfers its outer electron to a non-metal atom
What happens when you go down group 7
Tye halogens become less reactive as the atoms gain more electron shells so therfore further from the nucleus
Name three halogens
Bromine
Chlorine
Iodine
At room temperature what are these 3 halogens like
Bromime - red/brown liquid
Iodine - dark grey solid
Chlorine - pale green gas
What is the test for chlorine
Insert damp litmus paper into a test tube containing a gas.
If the gas is chlorine, the litmus paper will bleach and change colour from red to white.
Wnat group are noble gases in
Group 0
Why are noble gases unreactive
Have a full outer shell so dont gain or lose any electrons
What can noble gases be used for
Light bulb
How are noble gases arranged
As they are unreactive they are single atoms ( monatomic)
