metals (3) Flashcards
Why does metalic bonding conduct electricity
It contains delocalised electrons
what would be the reactivity order of metals for these metals; aluminium, copper, zinc and magnesium
Magnesium, Aluminium, Zinc and Copper
What is reduction?
A gain of electrons by a reactant in a reaction e.g. a metal compound being converted into a metal
fe3+ + 3e- —— fe
What is an oxidation?
A loss of electrons by a reactant in a reaction e.g. a metal compound being converted into a metal compound
Na— Na+ e-
What are the extraction methods for metals and what metals are they used for
- Heat alone = Ag-Hg
- Heating with carbon or carbon monoxide = Cu-Zn
- Electrolysis = top metals
What are the two ion electron equations for the early stages of rusting or iron
2H20 + O2 + 4e- —— 4OH
Fe—– Fe2+ + 2e-
What are the contents of a car battery and what important property does it have
- Lead and sulfric acid
- It is rechargable
What flows through the ion bridge and what flows through the wires and meter
Ions flow through ion bridge
- electrons flow through wires and meter
What is the purpose of an ion bridge?
To complete the circuit
What is an electrolyte
A solution that conducts by the movement of ions
