Using materials (chemistry only)

Question 7

Easy

Polymers are used to make fabrics for outdoor hiking jackets.

Table 1 shows some properties of two polymers.

Table 1

Property	Polymer A	Polymer B
Density in $g/cm3\text{g/cm}^3$	0.8	1.2
Melting point in $∘C^\circ\text{C}$	130	220
Tensile strength	Low	High
Water absorption	Low	High

A hiking jacket needs to be lightweight, durable (have high tensile strength), and water-resistant (have low water absorption). Based on Table 1, decide which polymer (Polymer A or Polymer B) is best for each of the following properties of a hiking jacket:

Density (to make it lightweight)
Tensile strength (to make it durable)
Water absorption (to prevent wetting)

[3]

A hiking jacket made from Polymer B has a mass of $kg1.8\text{ kg}$ . Calculate the mass of a jacket of the same dimension made from Polymer A.

Use the information in Table 1 and the equation: $jacket\text{mass of Polymer A jacket} = \frac{\text{density of Polymer A}}{\text{density of Polymer B}} \times \text{mass of Polymer B jacket}$

[2]

Using materials (chemistry only)

Question 7

Table 1

Using materials (chemistry only) Questions

Using materials (chemistry only)

Question 7

Table 1

Using materials (chemistry only) Questions