5. Chemical Changes Flashcards
The metals can be placed in order of reactivity by…
their reactions with water and dilute acid
What gas is given off if metals react with water or dilute acid?
Hydrogen
In an aqueous solution, a more reactive metal will displace…
a less reactive metal
The non-metals hydrogen and carbon can be given positions on the reactivity series based off…
displacement reactions
Oxidation is…
the loss of electrons
Reduction is…
the gain of electrons
A metal ore contains..
enough if the metal to make it economical to extract
Ores might need to be concentrated before…
the metal is extracted and purified
Gold and some other unreactive metals can be found in…
their native state
How can the reactivity series give you information about ores?
It can help you decide the best way to extract the metal from its ore
