Unit 13 - the behaviour of metals Flashcards
Why is sodium or potassium don’t usually put into acid in the lab
too reactive so it is dangerous
Which metal is usually used if we wanted to react a reactive metal in the lab
Magnesium
_____ metal will displace _____ metal in the compound
A more reactive, less reactive
List reactivity series
Potassium - pls Sodium - stop Calcium -calling Magnesium -me Aluminium -a Carbon -cute Zinc -zebra Iron -I Lead -like Hydrogen-her Copper -calling Silver -sexy Gold -gangster
What is thermal decomposition
Compounds break down by heating
What kind of metal compound is easily get decompose when is heated
The less reactive metals
In a simple cell, if the type of metal rods are further apart in the reactivity series, the ______ voltage they give
higher
What is galvanising
the iron or steel is coated with zinc
How is aluminium protect itself from corrosion
The outer layer of aluminium reacts with oxygen to form a thin layer of aluminium oxide, which act as a barrier to further corrosion.
As the metal in the compound is _________ the compound gets more stable
More reactive
how is carbonate thermal decomposes
oxide + carbon dioxide
how is hydroxide thermal decomposes
oxide + water
how is nitrate thermal decomposes
oxide + nitrogen + oxygen
