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16 Cards in this Set

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Physical Properties of Metals
Malleable- Moulded into different shapes
Durable
Conduct Electricity-
Conduct Heat-
High density- high
Opaque- impervious to light
Lustrous- bright and polished
Ductile- could be drawn into wires
Solid at room temp
Sonorous- makes a definite sound
Physical Properties of Metals Which are Bad
Rusting- Could break
Dense- Will always sink
Magnetic
Methods of Preventing Rust
Painting- impermeable to air and rain (cheap but could chip and deteriorate)
Electroplating- you use electrolysis to form a layer of metal over the first piece. You could gold plate things because it lasts for a long time.
Alloy- A substance that is a mixture of two or more metals
Wax or Grease- Wax, Oil, Grease, or lubricant is used for moving parts because it doesn’t stick like paint.
Sacrificial Protection- You put a thin layer of a more reacting metal around the metal you want to protect.
Rusting requires both
Oxygen and Water
Accelerate Rusting using either
Salt or Acid
(OIL RIG)
Oxidation is Lost, Reduction is gained- for electrons
The term that describes when oxidation and reduction happen at once
Redox
Group One are:
Alkali Metals
Group 2 are:
Alkaline Earth Metals
How to test which metals react more
1. Place three oxides in a vacuum
2. Introduce the metals to oxygen
3. The one that can reacts to oxygen is the most reactive
4. Introduce the others to water
5. The one that reacts to water is the second most reactive
6. Introduce the rest to diluted HCl
7. None reacted
8. Introduce to concentrated HCl
A Displacement Reaction is when
A more reactive metal will displace a less reactive metal from a solution.
1st step.
6 C + 3 O2 → 6 CO
The coke (pure carbon) reacts with oxygen in the air blast to produce carbon monoxide
2nd step
6 CO + 2 Fe2O3 → 4 Fe + 6 CO2
The carbon monoxide reduces the iron ore to molten iron, becoming carbon dioxide in the process
3rd Step
CaCO3 → CaO + CO2
In the heat of the furnace the limestone flux decomposes to calcium oxide:
4th Step
CaO + SiO2 → CaSiO3
calcium oxide combines with silicon dioxide to form slag.
slag is called
Calcium Silicate