Chemistry WA2

Question 1

Melting and boiling point of macromolecules

Answer 1

Low

Question 2

Electrical conductivity of macromolecules

Answer 2

Non conductor

Question 3

Solubility of macromolecules

Answer 3

Insoluble in water and organic solvents

Question 4

Hardness of macromolecules

Answer 4

Vary greatly in hardness and flexibility

Question 5

Other properties/information about molecules

Answer 5

The difference in structural properties of polymers allow them to be made into a variety of items

Question 6

What is an alloy

Answer 6

A mixture of a metal with one or more other elements

Question 7

Structural properties of alloys

Answer 7

The atoms are of different sizes - regular lattice arrangement in pure metals is disrupted, so a larger force is needed to make the layers slide over each other. Alloys are less malleable and less ductile than pure metals.

Question 8

Structural properties of pure metals

Answer 8

Pure metals have a regular structure. If enough force is applied, the layers of atoms can slide past one another easily - malleable. They are also ductile as a sea of delocalised electrons will continue to hold the metal ions together.

Question 9

Melting and boiling point of alloys

Answer 9

Alloys melt over a range of temperatures

Question 10

Thermal conductivity of alloys and metals

Answer 10

Good conductors of heat as the delocalised valence electrons allow efficient transfer of thermal energy throughout the giant metallic lattice.

Question 11

Electrical conductivity of alloys and metals

Answer 11

Sea of delocalised electrons