Types Of Elements Flashcards
What happens as you go down group 1 in terms of properties?
May become more reactive
They have low melting and boiling points
What is group 1 often referred to?
The alkali metals.
What are the alkali metals in group 1?
Lithium Sodium Potassium You might not need to know Rubidium Caesium
What is the trait that all of the group 1 metals share?
They all have one outer electron.
Why do they become more reactive as they go down the group in alkali metals?
Because as I go down the table down more shells. This means that they are farther from the nucleus and less attracted to them.
Cause they bond ionically is easier for them to go away
What’s is the charge of a group 1 ion?
They have a charge of positive one.
What colour are the compounds that group 1 metals produce?
White.
What colour is the solution formed when alkaline metals dissolve?
They are colourless.
What gas is produced in a reaction with a group 1 metal.?
Hydrogen.
How do you test for hydrogen?
You place a lighted splint in it and it will make a popping noise if there is hydrogen.
How does the position in the periodic table affects the vigouresness of the reaction with water in alkali metals?
The higher up the table the less vigourous.
The lower down the table the more rigourous
What is group 7 called?
Halogens.
What are the trends for group 7?
As you go down:
– It becomes less reactive
– Have a higher melting point
– Higher boiling point.
Are the halogens nonmetals or metals?
They are nonmetals.
What colour are the vapours of the halogens?
They produce coloured vapours. – Fluorine produces a yellow gas – Chlorine produces a dense green gas – Bromine produces a red brown liquid – Iodine make the purple vapour.