Joshua observed the changes in a cake when it was baked in a oven. What best explains that he observed a chemical change? A. He saw the rising batter from the cake in oven.
B. He saw the cake expand outside the rim of the baking dish
C. He noticed the flour and other ingredients lose their unique properties.
D. He noticed the steam from the moisture rise in the oven.

i think so it’s will be b yes i believe its

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.