To determine which options best complete the chart, let's analyze the types of materials and their associated examples.
The chart lists the following types of materials:
1. Conductor: silver
2. Insulator: X
3. Semiconductor: Y
4. Superconductor: mercury
We need to find suitable examples for X and Y from the provided options.
- Copper is a metal and an excellent conductor, so it cannot be an insulator (X).
- Glass is generally an insulator, but not a semiconductor (Y).
- Rubber is an insulator.
- Paper is also an insulator but it is not highly recognized in such contexts.
- Silicon is a well-known semiconductor.
Given these properties, the correct combinations should be:
- X: Rubber (a known insulator)
- Y: Silicon (a known semiconductor)
So, the best entries to complete the chart are:
[tex]\[ \text{Insulator: Rubber} \][/tex]
[tex]\[ \text{Semiconductor: Silicon} \][/tex]
Hence, the best options are:
[tex]\[ X: \text{Rubber} \][/tex]
[tex]\[ Y: \text{Silicon} \][/tex]
