Chapter 5 - Chemistry Flashcards
What are Ores?
Ores are rocks from which it is economical to extract the metals that they contain.
What is the reactivity series?
The reactivity series is a list of metals in order of their reactivity, with the most reactive metals at the top and the least reactive ones at the bottom.
How can metals be placed in order of reactivity?
By their reactions with water and dilute acid.
How else can you put metals in the reactivity series?
By putting them in competition with each other.
How will a more reactive metal displace a less reactive metal?
From it’s aqueous reaction.
How can non metals hydrogen and carbon be given positions in the reactivity series?
On the basis of displacement reactions
What is a metal ore?
It contains enough of the metal to make it economic to extract the metal.
Where can gold and some other unreactive metals be found?
It can be found in their native state.
What does the reactivity series help you with?
It helps you decide the best way to extract a metal from it’s ore.
What are metals more reactive than carbon extracted from?
They are extracted from electrolysis of the molten metal compound
What is the general name of a salt?
For a compound formed when the hydrogen in an acid is wholly, or partially, replaced by metal.
How can salts be made?
Salts can be made by reacting a suitable metal with an acid. Metal must be above hydrogen in the reactivity series, but not dangerously reactive.
What does a reaction between a metal and an acid produce?
It produces hydrogen gas as well as a salt.
What occurs when an acid reacts with a base?
A neutralisation reaction occurs
What does the reaction between an acid and a base produce?
It produces salt and water
