Question

questions: 1. a student observes that when two clear liquids mix, the solution turns yellow and becomes warm. develop a model to explain what happened at the atomic level and determine whether this is a chemical reaction. what evidence supports your conclusion? 2. using the periodic table, predict which element would have

Explanation:

1.

• Atomic-level model & explanation: When the two clear liquids mix, the atoms/molecules of the reactants rearrange their chemical bonds. Old bonds between atoms in the original liquids break, and new bonds form to create a new yellow substance, while energy is released as heat (causing the warm temperature).
• Evidence for chemical reaction: The formation of a new yellow substance (a color change, a sign of new matter) and the release of heat (a temperature change, evidence of energy transfer) both confirm this is a chemical reaction, as these indicate irreversible atomic rearrangement and new substance formation.

Answer:

1. This is a chemical reaction.
2. (Note: The second question is incomplete; please provide the full prompt for question 2 to get a complete answer.)