Question

1. i like my coffee sweet, so i add a tablespoon of sugar to my cup of coffee and the solid disappears. what makes up the cup of coffee now? is this a mixture?

Explanation:

Step1: Identify Components

The original coffee has coffee solutes (like caffeine, flavor compounds) and water. Then sugar is added. So the cup of coffee now has coffee (solutes), water, and dissolved sugar.

Step2: Define Mixture

A mixture is a combination of two or more substances where each retains its chemical identity. Here, coffee components, water, and sugar are mixed; sugar dissolves (forms a solution, a type of mixture) without chemical change.

Answer:

The "cup of coffee" now is made up of coffee (with its solutes), water, and dissolved sugar. Yes, it is a mixture (specifically a solution, as sugar dissolves in the aqueous coffee, and all substances retain their chemical properties).