Question

Critical Thinking Use this table to answer the following question. Element Melting Point Boiling Point (°C) (°C) -7.2 59 Bromine Chlorine Iodine 7 Infer You are given samples of the substances shown in the table. The samples are labeled A, B, and C. At room temperature, sample A is a solid, sample B is a liquid, and sample C is a gas. What are the identities of samples A, B, and C?

Answer 1

Labeled samples A, B, and C are respectively Iodine, Bromine, and Chlorine based on their observed states at room temperature, which align with the melting and boiling points provided in the table.

Step-by-step explanation:

The melting and boiling points of substances provide a means of identifying them. At room temperature, which is approximately 20°C, different states of matter (solid, liquid, gas) can be found depending on a substance's melting and boiling points.

Given the information in the table, we can infer that:

• Sample A has a melting point greater than 20°C, so it is a solid at room temperature. Therefore, Sample A is Iodine.
• Sample B has a melting point lower than 20°C and a boiling point greater than 20°C, so it is a liquid at room temperature. Thus, Sample B is Bromine.
• Sample C has both a melting and boiling point lower than 20°C, so it is a gas at room temperature, indicating that Sample C is Chlorine.

Learn more about States of Matter