Which of the following statements is true concerning a heating curve?

a. it is a pie chart that shows the phases of a substance.

b. it is a bar graph that shows a change over time.

c. it shows the phase changes of a substance over time.

d. it has nothing to do with heating a substance.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.