A student is using a thermometer to measure an endothermic reaction. What should her temperature data show? A. the reaction beaker feels warm when she picks it up. B. the temperature of the materials goes up as the chemical reaction progresses. C. the temperature of the starting materials and ending materials do not change. D. the temperature fo the materials goes down as the chemical reaction progresses.

Answer 1

In an endothermic reaction, the system absorbs heat from the surroundings, which typically results in a decrease in temperature. Therefore, the student's temperature data should show:

D. the temperature of the materials goes down as the chemical reaction progresses.

This is because, during an endothermic reaction, the reactants pull energy from their surroundings, causing a drop in temperature.