Periodic table Flashcards
Name the rules for group 1?
- All have one electron on the outer shell.
- Reactivity INCREASES going down the group.
What are the two golden rules of chemistry?
- All atoms want a full outer shell of electrons.
- All molecules want a neytral charge
Where is all the mass of any atom kept?
In the nucleus
- Charge of all nuclei is positive as it contains protons and neutrons.
Why does reactivity increase in Group 1?
Reactivity increases because electron number increases.
What is group 0?
Noble gases.
Describe noble gases?
- Very stable and unreactive.
- Full outer shell.
Noble gases become…………………………………………………..
More dense as they go down the group.
What happens as you go down group 7?
-The reactivity decreases.
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What do all group 1 / alkali metals form in water ?
Metal hydroxides.
Give an example of a group 7 and a group 1 reaction?
Litium and chloride = lithium chloride
What do group 7 elements react vigorously with?
Group 1 elements to form metal hallides.
What group are alkali metals in?
Group 1
What do all group 1 metals do?
-React with water
What does the top number tell us?
Mass number= number of neutrons and protons.
