A student watches the burning candle in Figure 11.2 and observes that the flame gets smaller as

Question:

A student watches the burning candle in Figure 11.2 and observes that the flame gets smaller as the reaction progresses. Based on this observation, the student hypothesizes that decreasing temperature is causing the reaction to slow down. Propose an alternative hypothesis to explain this observation. What other measurements could be made in order to allow you to decide which of these two hypotheses better explains the experiment?

Figure 11.2