A hot metal block is placed into a beaker of cold water. Explain what happens to the thermal energy of the system.

Why do consumers feel warmer after eating a meal

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?