1- Properties And Working Characteristics

Question 1

What are the 6 physical properties of materials?

Answer 1

Absorbency,
Resistance To Moisture,
Density,
Fusibility,
Electrical Conductivity,
Thermal Conductivity.

Question 3

Absorbency

Answer 3

A materials ability to soak up and retain a liquid.

Important to fabrics as fabrics with high absorbency are comfortable to wear as they absorb perspiration.

Question 4

Resistance To Moisture

Answer 4

A materials ability to prevent liquid and moisture permeating it’s surface (going through).

Fabrics that are moisture-resistant or have a water-resistant coating coating applied to them can then be used to produce waterproof clothing.

Question 5

Density

Answer 5

Density is a materials mass per unit volume.

Expanded polystyrene is used in packaging for protecting expensive or fragile products due to low density

Question 6

Fusibility

Answer 6

Fusibility is how easily a materials state can be altered TO BECOME A LIQUID!

This is important property in solder, where it’s low melting point allows it to melt with the heat of the soldering iron.

Question 7

Electrical Conductivity

Answer 7

Electrical Conductivity is how easily electrical energy can pass through a material.

Gold is an excellent conductor of electricity, and is used in high-end electrical components.

Question 8

Thermal Conductivity

Answer 8

Thermal Conductivity can be described as how easily heat energy can pass through a material.

Aluminium is an efficient conductor of heat, which makes it a popular choice when manufacturing pots and pans.

Question 9

What are the 6 working properties of materials?

Answer 9

Strength, 
Hardness,
Toughness,
Malleability,
Ductility,
Elasticity.

Question 11

Strength

Answer 11

The ability to withstand a constant force without breaking.

There are five types of force: …

Question 12

Tension (force 1)

Answer 12

The 2 ends of a material being pulled in opposite directions

Question 13

Compression (force 2)

Answer 13

The 2 ends of the material being pushed together

Question 14

Shear (force 3)

Answer 14

One side of the material being pushed one way and the other side being pushed in the opposite direction

Question 15

Torsion (force 4)

Answer 15

Each end being twisted in opposite directions

Question 16

Bending (force 5)

Answer 16

Either side of the material being curved in the same direction creating compression on one side and tension on the other

Question 17

Hardness

Answer 17

Hardness is the ability of a material to withstand scratching, cutting and abrasion.

Question 18

Toughness

Answer 18

Toughness can be described as a materials ability to withstand impact from a dynamic force.

Children’s toys are subjected to wear and tear, and they need to be tough

Question 19

Malleability

Answer 19

Malleability is a materials ability to be permanently deformed or shaped by impact, rolling or pressing WITHOUT BREAKING!

Question 20

Ductility

Answer 20

Ductility is a materials ability to be drawn or pulled into a long length or wire without breaking.

Question 21

Elasticity

Answer 21

Elasticity is a measurement of a materials ability to stretch under force and return to its original shape without deformation when the force is removed.