List three other physical properties that could be used to identify this sample
To identify a sample, there are several physical properties you can consider. Here are three examples:
1. Density: Density is the measure of how much mass is contained in a given volume. It can be calculated by dividing the mass of the sample by its volume. Each substance has a unique density, which can help identify it. To determine the density of a sample, you will need a balance to measure its mass and a known volume to measure its volume (for example, using a graduated cylinder or by displacement).
2. Melting Point/Freezing Point: The melting point is the temperature at which a substance changes from its solid state to a liquid state. Similarly, the freezing point is the temperature at which a substance changes from its liquid state to a solid state. Different substances have different melting and freezing points, so determining the melting point or freezing point of a sample can help identify it. To measure the melting or freezing point, you will need a specialized apparatus, such as a melting point apparatus or a thermometer.
3. Electrical Conductivity: Electrical conductivity is the ability of a substance to conduct electrical current. Some substances are good conductors of electricity (e.g., metals), while others are poor conductors or insulators. Conductivity can be measured using a conductivity meter or by assessing how well a sample conducts electricity. This property can be useful in identifying certain samples, particularly those with distinctive conductive or non-conductive properties.
When identifying a sample using physical properties, it is important to consider a combination of properties, as no single property is definitive. Additionally, it may be necessary to rule out similar substances and conduct further tests or analysis to confirm the identification.