Yesterday was a lot of experimenting. You had the chance to watch some chemical reactions and learn about the pH of the various media you can use to grow plants.
In your journal, near your data chart from yesterday’s experiment, write down these questions and a one sentence answer for each one.
How did you know a chemical reaction had occurred?
What did it mean when nothing happened for one of the tests?
What did it mean when nothing happened in any of the tests?
Take a look at this video to refresh your ideas of what makes a chemical change.