C4 Flashcards
what is the reactivity of metals and water in order
Potassium Sodium Lithium Calcium Magnesium
what is the reactivity of metals and acids in order
magnesium
zinc
iron
copper
how does a displacement reaction occur with metals
more reactive metals displace less reactive metals
E.G. sodium displaces magnesium
why do some group one and two ions form easier than others?
because the electrons are much further away from the nucleus meaning they are not as attracted and can be lost easier
magnesium pushes iron out of the reaction, what happens to the magnesium regarding the iron?
the Magnesium is then coated with iron
what is oxidation in terms of electrons
when a metal loses electrons and turns into an ion
what must be involved in order for a displacement reaction to take place
a reactive metal element
the compound of a less reactive metal
the more reactive a metal
the harder they push off electrons
what is reduction in terms of electrons
the gain of electrons
Remember OILRIG
Oxidation Is Loss
Reduction Is Gain
when looking for the purity of a substance, what should be tested?
MP and BP
on the ph scale which half is acidic and which is alkaline
the higher half is alkaline the lower half is acidic
7 is neutral
how do you measure the ph of a solution
using an indicator
what is the ph of a base
higher than 7
metal oxides and metal hydroxides react with acids in neutralisation reactions to form
a salt and water
