C8 - Reactions of metals (PAPER 1) Flashcards
What does reactivity mean
how vigorously a substance chemically reacts
How can metals be ordered by their reactivity
by comparing their reactions with water, acid and oxygen
What is the name given to a list of metals ordered by their reactivity
reactivity series
In terms of electrons, what makes some metals more reactive than others
they lose their outer shell electron (s) more easily
Why are gold and silver found naturally as elements in the Earth’s crust
they are very unreactive
What is an ore
rock containing enough of a metal compound to be economically worth extracting
How are metals less reactive than carbon extracted from their ores
reduction with carbon
In terms of oxygen, what is oxidation
addition of oxygen
In terms of oxygen, what is reduction
removal of oxygen
Why can metals like potassium and aluminium not be extracted by reduction with carbon
they are more reactive than carbon
How are metals more reactive than carbon extracted from their ored
electrolysis
What is a displacement reaction
a more reactive substance takes the place of a less reactive substance in a compound
What is an ionic equation
equation which gives some substances as ions and has spectator ions removed
What type of substance is given as ions in an ionic equation
ionic compounds in solution (or liquid)
What is a spectator ion
an ion that is unchanged in a reaction
