Metals Flashcards
What is metallic bonding
The electrostatic force of attraction between 2 positively charged ions and delocalised electrons
Why are metallic elements conductors of electricity
They contain delocalised electrons
What is reductions
A gain of electrons by a reactant in any reaction
What is oxidation
Loss of electrons by a reactant in any reaction
What kind of equations can be joined together to make a radix reaction
Ion-electron equations
What happens during the extraction of metals
Metal ions are reduced forming metal atoms
What are the methods used to extract an ore
Heat. Alone
Heat + carbon-monoxide
Electrolysis
What is electrolysis
The decomposition of an iconic compound into its elements using electricity
Why must a.d.c be used in electrolysis
If the products of electrolysis are to be identified
What happens to the ions in electrolysis
Positive ion gin electrons at the negative electrode
Negative ions lose electrons at the positive electrode
What is an electrolyte
Solution containing ions which conducts electricity
How is a simple cell made
By placing 2 metals in an electrolyte
What is the ion bridge used for
To let the ions across to complete the electrical circuit
Electricity can be produced in cells….
Where at least one half of the cells does not involve metal atoms/ions
What can a graphite rod be used for
Used as the electrode in half cells
