4. Chemical Changes (reactivity of metals, reactivity series, extraction of metals) Flashcards
What do metals react with oxygen to produce?
Metals + oxygen -> metal oxides
Why is this reaction (metals + oxygen -> metal oxides) known as an oxidation reaction?
because the metals gain oxygen
What is reduction?
the loss of oxygen
What is oxidation?
the gain of oxygen
What is the reactivity of metals related to?
its tendency to form positive ions
What is the reactivity series?
the arrangement of metals in order of their reactivity
What sentence can help you remember the reactivity series?
Please
Stop
Calling
Me
A
Careless
Zebra
Instead
Try
Learning
How
Copper
Saves
Gold
What is usually included in the reactivity series?
Non-metals - Hydrogen and Carbon
State the reactivity series, in order
Potassium
Sodium
Calcium
Magnesium
Aluminium
Carbon
Zinc
Iron
Tin
Lead
Hydrogen
Copper
Silver
Gold
What can a more reactive metal do to a less reactive one?
It can displace it
Where are unreactive metals, like gold, found?
In the Earth as the metal itself
How are most metals found?
As compounds that require chemical reactions to extract the metal
How can metals less reactive than carbon be extracted from their oxides?
By reduction with carbon
What is the acronym for oxidation and reduction in terms of electrons?
OILRIG:
Oxidation
Is
Loss
Reduction
Is
Gain
