Changes of state and the particle model

EasyMedium
12345678910111213141516171819202122
Question 18
Medium

An aerospace engineer is testing a newly fabricated composite casing to verify its material grade. The engineer's measurements determine the density of the composite sample to be 1.65±0.08 g/cm31.65 \pm 0.08\text{ g/cm}^31.65±0.08 g/cm3.

a.

State the minimum and maximum values for the density of this composite sample.

[2]
b.

Table 1 shows the reference densities for five different carbon-epoxy material grades.

Table 1

Material GradeDensity in g/cm3\text{g/cm}^3g/cm3
Grade 11.82±0.101.82 \pm 0.101.82±0.10
Grade 21.90±0.051.90 \pm 0.051.90±0.05
Grade 31.50±0.081.50 \pm 0.081.50±0.08
Grade 41.40±0.061.40 \pm 0.061.40±0.06
Grade 51.30±0.121.30 \pm 0.121.30±0.12

Which two material grades from Table 1 could be the composite sample the engineer tested? Explain your answer.

[3]

Changes of state and the particle model Questions

  1. GCSE
  2. /Physics
  3. /Changes of state and the particle model