Three statements concerning energy changes in chemical reactions are given. 1 For an endothermic reaction, the temperature of the surroundings rises. 2 For an exothermic reaction, thermal energy is absorbed from the surroundings. 3 On the reaction pathway diagram for an exothermic reaction, the products are at a lower energy level than the reactants. Which statements are correct?
- A1 and 2
- B1 only
- C2 and 3
- D3 only