Science Unit 4 Lesson 6

Question 1

What does smelting mean?

Answer 1

to extract metal from an ore by heating and melting it

Question 2

Bronze is made by combining what 2 things?

Answer 2

By combining melting copper and tin

Question 2

What is good about copper?

Answer 2

.pliable
.high conductivity
. anti-corrosion properties

Question 3

What is copper mainly used for?

Answer 3

wires in homes, electronics, and coins

Question 4

Copper is often extracted from what minerals?

Answer 4

Chalcopyrite and cornite

Question 5

What properties does tin have?

Answer 5

.soft
.pliable
.resists corrosion

Question 6

Why is tin commonly combined with other metals?

Answer 6

Because is resists corrosion

Question 7

What is tin-based solder?

Answer 7

is used to fuse metals together

Question 8

Where is tin extracted from?

Answer 8

It is extracted from the ore Cassiterite.

Question 9

Why is aluminum essential to airplanes?

Answer 9

because of its durability, light weight, and low cost.

Question 10

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

Answer 10

80% of an airplanes structure is made of aluminum.

Question 11

Aluminum is combined with tin to make what?

Answer 11

This element is combinded with tin to make aerospace.

Question 12

True or False.

Aluminum is the most abundant metal on Earth’s crust.

Answer 12

True

Question 13

What percentage of earth’s crust is aluminum?

Answer 13

8%

Question 14

Where is aluminum found in?

Answer 14

Its primarily found in the mineral bauxite.

Question 15

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

Answer 15

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 16

What does high reactive aluminum mean?

Answer 16

This means that it bonds very easily with other elements to form compound

Question 17

Basic facts of aluminum?

Answer 17

Aluminum is a ductile and malleable metal that
is a good conductor of heat and electricity. It is
the third most common element, and the most
common metal, on Earth, making up about 8%
of Earth’s crust.

Question 18

Aluminum can be found in what minerals?

Answer 18

Aluminum can be found in a great number of
minerals, including bauxite, corundum,
alunite, topaz, and mica.

Question 19

Steps to make aluminum/the bayer process

Answer 19

The aluminum in bauxite ore cannot be
produced directly. The first step in aluminum
production is to extract alumina from the ore.
Alumina, or aluminum oxide, is a chemical
compound of aluminum and oxygen.
The alumina in bauxite is produced through the
Bayer process. This process extracts alumina
from the remaining components of the bauxite
ore. It takes 2 pounds of bauxite ore to produce
1 pound of alumina.

Question 20

What is alumina?

Answer 20

Alumina or aluminum oxide is a chemical compound of aluminum and oxygen

Question 21

Why is strip mining generally used for bauxite?

Answer 21

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

Question 22

What is a ductile metal?

Answer 22

A metal that is ductile can be stretched into thin
wires without breaking.

Question 23

What is a malleable metal?

Answer 23

A metal that is malleable can be hammered or pressed into thin sheets

Question 24

What is a ductile metal?

Answer 24

A metal that is ductile can be stretched into thin wires without breaking

Question 25

Tin’s avalabilty compared to other minerals.

Answer 25

Tin is the 49th most abundant mineral in
the Earth’s crust.

Question 26

How much tin does the earths crust contain?

Answer 26

The crust contains about 0.0002% tin

Question 27

What does corrosion mean?

Answer 27

the destruction of a material by a chemical action

Question 28

What is a malleable metal?

Answer 28

A metal that is malleable can be hammered or pressed into thin sheets.

Question 29

Coppers avabilaty compared to other metals, is its scarce or abundant?

Answer 29

Ideally,
metals should be mined in locations where the
concentration is greater than 2%. However, in 2015, the
global average of copper concentration in mined ores
was 0.62%, far below the 2% ideal. Thus copper is scarce

Question 30

What is tin’s avalability compared to other metals; is it scarce or abundant?

Answer 30

Tin is the 49th most abundant mineral in
the Earth’s crust. The crust contains
about 0.0002% tin.