Classifying Materials

Question 1

What are the 3 classifications

Answer 1

metals, ceramics, and polymers

Question 2

What determines the class of a material

Answer 2

The atomic bonding forces of the particular material

Question 3

How are metals organised further

Answer 3

Based on their chemical composition or certain physical or mechanical properties

Question 4

Polymers

Answer 4

Most polymers are created by engineers the combination of hydrogen atoms and the arrangement of chains they form

Question 5

How are polymers binded and what do they form

Answer 5

The polymer molecule is a long chain of covalent-bonded atoms and secondary bonds that hold groups of polymer chains together to form the polymeric material

Question 6

Name a well known man made material

Answer 6

Kevlar, used in bucket proof vests, strong/lightweight frames and underwater cables

Question 7

Are polymers more or less dense than metals and ceramics

Answer 7

Less

Question 8

Give 3 positives of polymers

Answer 8

Resist atmospheric and other forms of corrosion
Good compatibility with human tissue
Excellent resistance to conduction of electrical current

Question 9

What are polymers primarily produced from

Answer 9

Petroleum or natural gas raw production

Question 10

Composites

Answer 10

A combination of two or more distinct materials, each of which retain its own distinctive properties, to create a new material with properties that cannot be achieved by any of the components acting alone

Question 11

What are the 3 categories of composites

Answer 11

Dispersion strengthened, Particle reinforced and fibre reinforced

Question 12

What are composite materials categorised based on

Answer 12

strength

Question 13

Dispersion strengthened composites

Answer 13

Fine distribution of secondary particles in the matrix of the material

Question 14

Parti