Atoms Molecules & Ions

Question 1

Describe the Refining Process for the extraction of Aluminum from Bauxite

Answer 1

Auminates dissolved from bauxite
Impurities are separated
Al2O3 is precipitated from soda solution
Dried and Calcined at 1000 Degrees

Question 2

Describe the Smelting Process for the extraction of Aluminum from Bauxite

Answer 2

Al2O3 is dissolved in cryolite
Carbon anode electrolysis
Al is removed from the electrolysis bath and cats into ingots

Question 3

What is the chemical equation for the electrolysis of alumina? (bauxite extraction)

Question 4

What is the macroscopic perspective?

Answer 4

Considers bulk physical and chemical properties (density malleability, changes of state)

Question 5

What is the Microscopic perspective?

Answer 5

Representation of individual atoms

Question 6

What is the Strong Nuclear force

Answer 6

A Fundamental force that keeps the nucleus bonded and stable

Overcomes Electrostatic Force of Protons

Question 7

A positively charged ion is called a

Answer 7

cation

Question 8

A Negatively charged ion is called a

Answer 8

Anion

Question 9

What is a compound?

Answer 9

pure substance made up of at least 2 elements chemically bonded together

Question 10

A Piece of Cork is 1.3cm X 4.5cm X 3 cm the lead is a cube of side 1.15cm

Density of Cork = 240mg cm^-3
Density of lead = 11.34 cm^-3

Will the assembly float on water? (1gcm^-3)

WIll the assembly float on brine (1.164 gcm^-3)

Answer 10