C8 Reactions of metals Flashcards
What does reactivity mean?
how vigorously a substance chemically reacts
In terms of electrons, what makes some metals more reactive than others?
they lose their outermost electron more easily
Why are gold and silver found naturally in the earth’s crust?
as they are unreactive
‘native metals’
What is an ore?
rock containing enough metal compound to be economically worth extracting
How are metals less reactive than carbon extracted from their ores?
reduction with carbon
What ore does aluminium come from?
Bauxite
How are metals more reactive than carbon extracted from their ores?
Electrolysis`
What is an ionic equation?
equation which gives some substances as ions and has spectator ions removed
What is a spectator ion?
Ion that is unchanged in a reaction
What is oxidiation?
loss of electrons
What is reductions?
gain of electrons`
What would we observe in a reaction of potassium with oxygen?
It would melt
Lilac flame
White solid produced
(Potassium oxide)
What type of ions do metals form?
Positive ions
