U4L6 Metal Resources Flashcards
What is the definition of smelting?
To extract metal from an ore by heating and melting it
How is bronze made?
By combining melting copper and tin
What’s good about copper?
- pliable
- high conductivity
- anti-corrosion
What is copper mainly used for?
wires in homes, electronics, and coins
Where is copper usually extracted from?
Chalcopyrite and bornite
What properties does tin have?
- soft
- pliable
- resists corrosion
Why is tin commonly combined with other metals?
Because is resists corrosion
What is tin based solder used for?
To fuse metals together
Where is tin usually extracted from?
Cassiterite
Why is aluminum used in airplanes?
Its durability, light weight, and low cost.
How much of an airplane’s structure is made of aluminum?
80%
I don’t know how I feel about that tbh
Aluminum is combined with tin to make what?
Aerospace
True or False.
Aluminum is the most abundant metal on Earth.
True
What percentage of earth’s crust is aluminum?
8%
Where is aluminum found in?
bauxite
Why do you think gold is found as a pure metal in nature while aluminum is found in ores?
Gold is not reactive, so it does not easily form chemical compounds with other elements, while aluminum is highly reactive and readily forms compounds.
Why is strip mining generally used for bauxite?
Bauxite is found at or near Earth’s surface, so it is most easily accessed using strip mining.
What is alumina?
Alumina is aluminum oxide—a compound of aluminum and oxygen.
Part is the process of refining copper includes electrolysis–the use of electricity to separate our impurities. How does this compare to the Hall-Héroult process?
Alumina is aluminum oxide—a compound of aluminum and oxygen.
When tin and niobium is combined what happens?
An alloy that is superconductive is created. When sufficiently cooled, this material exhibits zero electrical resistance.
What is the definition of tin?
The destruction of a material by chemical action
What is the definition of sustainable?
Able to continue over a period of time
According to the USGS, how much total copper was contained in world reserves as of 2018?
790 millions tons
Why is bauxite the most common ore that aluminum is extracted from?
- It is the most abundant ore of aluminum.
- It is located near the surface and can be easily strip mined.
