Competition & Extracting Metals Flashcards
Definition of displace
When one element takes the place of another element Ina compound
Definition of displacement reaction
A reaction in which a more reactive element takes the place of a less reactive one.
Definition of electrolysis
Breaking down substance using electricity
Definition of mineral
A naturally occurring element or compound that can form distinct grains in rocks
Definition of reduced
Something has lost oxygen
Definition of a reducing agent
A substance that removes oxygen from another substance
Definition of ore
A rock that contains enough of a certain mineral to make it worth mining.
How can rusting be prevented in iron
Physical barriers preventing steel being in contact with water and air.
Sacrificial protection where more reactive metals corrode instead of the iron
What is a hydrocarbon
These substances only contain carbon and hydrogen
What is the test for oxygen
Delights a glowing splint
Definition of an endothermic reaction
Exothermic reactions transfer energy from the reactants to the surroundings. The temperature of the surroundings increases
Definition of an endothermic reaction
Endothermic reactions use energy transferred from surroundings to the reactants. The temperature of the surroundings increases.
Which type of metals are easier to extract: more reactive or less reactive?
Less reactive as they have been available o use as the pure elements for much longer
How can metals on the reactivity scale from zinc downwards be extracted from their ores
With carbon
How can metals on the reactivity scale from zinc upwards be extracted from their ores
With electrolysis
