Name 5 of these metals
How many electrons do these metals have in their outer shell? What does this mean?
This means they are reactive
What sort of density do alkali metals have?
What are the first 3, and what does this mean?
The first 3 are less dense than water, meaning they float on it
As you go down group one..
- Become more reactive (because the outer electron is more easily lost because its further away from the nucleus)
- have lower melting and boiling points
What are the alkali metals keen to loose? Why?
Their one outer shell electron to form a 1+ ion
What bonding do alkali metals ONLY do?
What do they produce when they react with non-metals?
Ionic compounds containing ions with a 1+ charge
These compounds dissolve in water to form colourless solutions
What do lithium, sodium and potassium do when reacted with water?
They float and move around and fizz and produce hydrogen
What do the metals form when they react with water?
Hydrogen gas and a metal hydroxide that dissolve in water to form an alkaline solution
What is the equation for the reaction between water and an alkali metal?
Metal + water → metal hydroxide + hydrogen