chemical changes Flashcards
metal oxides general symbol equation
metals + oxygen -> metal oxides
oxidation
- metal gains oxygen
- loses electrons
reduction
- loss of oxygen
- gains electrons
what is the reactivity of a metal related to
its tendency to form positive ions
reactivity series
- potassium
- sodium
- lithium
- calcium
- magnesium
- aluminium
- carbon
- zinc
- iron
- tin
- nickel
- lead
- hydrogen
- copper
- silver
- gold
- platinum
potassium reaction with water
violent
sodium reaction with water
very quick
lithium reaction with water
quick
calcium reaction with water
more slow
calcium reaction with dilute acid
very quick
magnesium reaction with dilute acid
quick
zinc reaction with dilute acid
fairly slow
iron reaction with dilute acid
more slow
copper reaction with dilute acid
very slow
what happens when a more reactive metal reacts with a less reactive metal compound?
the more reactive metal displaces the less reactive one form the compound
the more easily the metals loses electrons and form positive ions
the more reactive it is
metal oxides
metals can combine with oxygen to form metal oxides
how most unreactive metals are found as a metal oxide
