U4L6 Metal Resources

Question 1

What is the definition of smelting?

Answer 1

To extract metal from an ore by heating and melting it

Question 2

How is bronze made?

Answer 2

By combining melting copper and tin

Question 3

What’s good about copper?

Answer 3

• pliable
• high conductivity
• anti-corrosion

Question 4

What is copper mainly used for?

Answer 4

wires in homes, electronics, and coins

Question 5

Where is copper usually extracted from?

Answer 5

Chalcopyrite and bornite

Question 6

What properties does tin have?

Answer 6

• soft
• pliable
• resists corrosion

Question 7

Why is tin commonly combined with other metals?

Answer 7

Because is resists corrosion

Question 8

What is tin based solder used for?

Answer 8

To fuse metals together

Question 9

Where is tin usually extracted from?

Answer 9

Cassiterite

Question 10

Why is aluminum used in airplanes?

Answer 10

Its durability, light weight, and low cost.

Question 11

How much of an airplane’s structure is made of aluminum?

Answer 11

80%

I don’t know how I feel about that tbh

Question 12

Aluminum is combined with tin to make what?

Answer 12

Aerospace

Question 13

True or False.

Aluminum is the most abundant metal on Earth.

Answer 13

True

Question 14

What percentage of earth’s crust is aluminum?

Answer 14

8%

Question 15

Where is aluminum found in?

Answer 15

bauxite

Question 16

Why do you think gold is found as a pure metal in nature while aluminum is found in ores?

Answer 16

Gold is not reactive, so it does not easily form chemical compounds with other elements, while aluminum is highly reactive and readily forms compounds.

Question 17

Why is strip mining generally used for bauxite?

Answer 17

Bauxite is found at or near Earth’s surface, so it is most easily accessed using strip mining.

Question 18

What is alumina?

Answer 18

Alumina is aluminum oxide—a compound of aluminum and oxygen.

Question 19

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?

Answer 19

Alumina is aluminum oxide—a compound of aluminum and oxygen.

Question 20

When tin and niobium is combined what happens?

Answer 20

An alloy that is superconductive is created. When sufficiently cooled, this material exhibits zero electrical resistance.

Question 21

What is the definition of tin?

Answer 21

The destruction of a material by chemical action

Question 22

What is the definition of sustainable?

Answer 22

Able to continue over a period of time

Question 23

According to the USGS, how much total copper was contained in world reserves as of 2018?

Answer 23

790 millions tons

Question 24

Why is bauxite the most common ore that aluminum is extracted from?

Answer 24

• It is the most abundant ore of aluminum.

- It is located near the surface and can be easily strip mined.