LAB: ACID BASE TESTS (Page 73) For this experiment, you will need a sample tray. Just add a few drops of cabbage juice in the test tray, then add a couple of drops of the substance. Cabbage juice comes first! (Remember that you always add acid to water, not the other way around!) I put a color guide at each station so you can check out the pH’s of your substance. Try and find the pH of at least ten different substances. See if you can do all 14! Substance Color pH Acid/Base/Neutral (Strong/Weak) When you're done, place your substances on this pH line for Homework tonight! (Goes on Page 72)