Question

How do we know that vinegar has diffused into the cube?

1 By measuring the amount of vinegar left in the beaker

2 The agar blocks contain a chemical indicator that turns colorless in the presence of acidic substances

3 The agar blocks contain a chemical indicator that turns colorless in the presence of basic substances

4 By looking at the agar cubes before the experiment

Answer 1

Answer:

As hydrogen ions from the vinegar move into the agar cube, the color of the cube changes allowing you to see how far they have diffused

Answer 2

when acid or base are present then it turns to yellowwhen it is acid when agar cubes also turn yellow when put immediately