[sharefah]

So in our lab we had to make several experiments, some of which were classified as chemical changes and others physical. The question that i have a problem with is the following:
"based on the observation made during the experiment, which evidence most likely would indicate a chemical change and why?"
should i choose the experiment with the most chemical properties in its reaction or what?

[P]

What observations were made during the experiments? Were they indicative of a chemical reaction or a physical reaction?

I think, from what little you have written, that you have seen some changes in a number of experiments and you have to say whether they are chemical reactions or physical ones. So list them 1 to 5 (or how ever many there are) and state your guess as to if they are chemical or physical based on what you witnessed during the experiment.