Periodic table Flashcards
What is an element?
It is a substance that is made of 1 atom and cannot be broken down
The vertical columns in the periodic table are…
Groups
The horizontal rows in the periodic table are known as…
Periods
What are alkali metals?
They are the group 1 metals and have 1 electron in their outer shell
What are alkaline earth metals?
These are the elements in group 2 and have 2 electrons in their outer shell.
What are halogens?
They are the elements in group 7 and have 7 electrons in their outer shell
What are noble gases?
They are the elements in group 8 (or 0)which has reached stability
What are the transition metals?
These are the metals in the middle of the table
What is the periodic table?
It is the table which shows all of the elements invented
Metal + acid=
Metal Salt + hydrogen
Metal + oxygen =
Metal oxide
Metal + water =
Metal hydroxide + hydrogen gas
What is displacement?
When a more reactive metal replaces the less reactive metal
Example of displacement
Zinc sulphate + aluminium = aluminium sulphate + zinc
What is an ore?
A naturally occurring solid material from which a metal can be extracted
What is the reactivity series?
It shows a list of of the metals in order of their reactivity so more reactive at the top and less at the bottom
What is thermite reaction?
When ignited by heat, thermite undergoes an exothermic reduction-oxidation.
What is the least reactive metal?
Gold
What is the most reactive metal?
Potassium
Potassium + water =
Potassium hydroxide + hydrogen gas
Magnesium + water =
No reaction
If the acid is nitric acid the salt formed is a …
Nitrate
If the acid is sulphuric acid the salt formed is a…
Sulphate
Magnesium + hydrochloric acid =
Magnesium chloride + hydrogen
