Types Of Elements
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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.
What colour is fluorine?
Fluorine is a yellow gas.
What colour is chlorine?
Chlorine is a green gas.
What colour is bromine?
It is a red brown volatile liquid.
What colour is iodine?
It is the dark grey crystalline solid Or it is a purple vapour.
What are the molecules of Group 7 like in terms of bonding?
They exist as molecules which are pairs of atoms. Four example chlorine exists as CL2.
What sort of halogens will displace other halogens?
Are more reactive halogen will displace a less reactive one. This will happen in the acqueous solution of its salt.
What are the transition metals?
Transition metals are metals in the middle of the periodic table. They are between groups two and group 3.
What are the properties of transition metals?
Their properties are: – They are looking doctors of heat and electricity – They’re very dense Shyong and shiny – They are much less reactive in group 1 metals – They’re also much denser stronger and harder than group on metals they also have high melting points
How many ions do transition metals have?
They have more than one ion.