My 9th grader is doing Apologia Physical Science this year. We have been really pleased with Apologia products in the past. This experiment was on concentration. Concentration is the quantity of a substance within a certain volume.
Here he is set up and ready to begin the experiment. His little brother is watching on.
dropping the Tums tablets into the vinegar
Watching the results. This was not one of the more exciting experiments but it was still a good lesson.
If you are still looking for a science course, I highly recommend this one. We have done Apologia astronomy, general science and are currently working through botany & physical science.