Section 11.7- Aluminum and Other Metals

Question 1

the third most abundant element in the earth’s crust

Answer 1

aluminum

Question 2

most abundant metal

Answer 2

aluminum

Question 3

hydrated aluminum oxide and is by far the major aluminum ore

Answer 3

bauxite

Question 4

a very stable compound that is not easily decomposed into free aluminum

Answer 4

aluminum oxide (alumina)

Question 5

process to produce aluminum metal in which the oxide is then mixed with molten synthetic cryolite

Answer 5

Hall- Heroult Process

Question 6

uses of aluminum

Answer 6

1. lightweight structural material for building trim, automobile parts, aircraft, spacecraft
2. high-voltage electrical transmission lines
3. aluminum cans

Question 7

a ceramic-like compound of aluminum and titanium is used in

Answer 7

1. jet engines,
2. car turbochargers
3. transparent armor

Question 8

the reaction of aluminum with oxygen, either from air or from another metal oxide, is very exothermic– a fact used in the

Answer 8

thermite process

Question 9

the primary commercial use for _________ is in care and truck batteries

Answer 9

lead

Question 10

a strong, lightweight, heat-resistant metal widely used in helicopters, airplanes and spacecrafts

Answer 10

titanium

Question 11

each year, roughly 50,000 tons of ________ are produced worldwide

the primary use is as a fuel in nuclear power plants

Answer 11

uranium