An archaeologist wants to identify an irregular metallic fragment recovered from an ancient shipwreck.
The archaeologist determines the density of the metallic fragment to be 7.55±0.25 g/cm37.55 \pm 0.25\text{ g/cm}^37.55±0.25 g/cm3.
What are the maximum and minimum values for the density of this fragment?
Table 1 shows the density values of five different metals and alloys.
| Metal/Alloy | Density in g/cm3\text{g/cm}^3g/cm3 |
|---|---|
| Zinc | 7.14±0.057.14 \pm 0.057.14±0.05 |
| Chromium | 7.19±0.087.19 \pm 0.087.19±0.08 |
| Cast Iron | 7.25±0.127.25 \pm 0.127.25±0.12 |
| Tin (white) | 7.31±0.057.31 \pm 0.057.31±0.05 |
| Stainless Steel | 8.00±0.158.00 \pm 0.158.00±0.15 |
Which two materials in Table 1 could be the metal of the fragment?
Describe a method using a displacement (Eureka) can that the archaeologist could use to determine the volume of this irregular metallic fragment.
22 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.