You can make pH testing material by either:
|1) Test strips can be made from the spice turmeric. To make some pH strips this put 1/4 cup alcohol in a bowl and stir in 1/4 tsp of turmeric.|
Click here for a full explanation of how to make a red cabbage acid/base indicator. Test strips can also be made from the red cabbage the same way they are made for the turmeric - dip paper towels in the red cabbage juice and then hang to dry.
3) You can buy red and blue test strips which are called "litmus paper."
|If you would like to see our experimenting, click here.|
You should begin by using the test strips to test a known acid and a known base to have something to compare the testing to. Then test the contents of the mystery glass. If you wish you can have them test other household items while you have the indicator strips all out and ready to use.
If the cola contained a sleeping potion, who does this indicate might be involved in the kidnapping?
Who do you think would have access to and knowledge of the sleeping potion?
Check the names off on your worksheet.
You can also make a guess in the poll. You can always change your guess.