can you change this up a bit

The word "flammable" in this sentence means that the liquids in the science lab can easily catch fire. The context clue that helped determine this meaning is the caution to be careful when lighting a match.

In the sentence, the term "flammable" refers to the characteristic of the liquids in the science lab being highly susceptible to catching fire. The contextual clue that assisted in discerning this sense is the warning to exercise caution when igniting a match.