C1 - Group 1 Elements Flashcards
How reactive are the elements in group 1?
Very reactive
Name all group 1 elements
Lithium,sodium,potassium,rubidium,caesium and francium
How much electrons do group 1 metals have in their outer shell?
One electron in their outer shell (this leads them all to being very reactive and gives them similar properties)
What are the trends when you go down the table for group 1 metals?
- Increasing reactivity ( As the outer electron is easily lost because the electron is further away from the nucleus the further down the group you go
- Lower melting and boiling points
- Higher relative atomic mass
Why do group 1 metals readily form 1+ ions?
As the elements dont need that much energy to lose their one outer electron to form a full outer shell
What is it called when alkali metals form with non metals?
Ionic compounds
What are common looks in ionic compounds?
They are generally white solids that dissolve in water to form colourless solutions
What happens when you put group 1 metals in water
They react very vigorously
What happens to lithium,sodium and potassium when you react it with water?
They float and move around the surface,reacting furiously
What do group 1 metals and water produce when they react with each other? (HINT GAS)
They produce hydrogen
(The amount of energy given out when they react increases down the group.For potassium and below,theres enough energy to ignite hydrogen)
What do group 1 metals and water also produce when they react together?
They also form hydroxides that dissolve in water to give alkaline solutions
What happens when group 1 metals react with chlorine
They react vigorously when heated in chlorine gas which form white salts called metal chlorides
(As you go down the group,as reactivity increases the reaction with chlorine gets more vigorous,like a chain reaction)
What happens when group 1 metals react with oxygen?
It forms a metal oxide,there are different types of oxides depending on the metal
What does sodium form when reacting with water? ( 2Na(a) + 2H20 )
Sodium hydroxide + Hydrogen ( 2NaOH(aq) + H2(g) )
What happens when sodium reacts with chlorine? ( 2Na(a) + Cl2(g) )
It forms sodium chloride ( 2NaCl(g)
