Endothermic reactions absorb heat from surroundings

Steps:

• Define endothermic reaction: absorbs energy (heat) from surroundings, increasing system energy.
• Evaluate statement 1: correct, as energy absorption matches definition.
• Evaluate statement 2: incorrect, as energy is absorbed, not released.
• Evaluate statement 3: correct, as heat absorption cools reaction mixture.
• Evaluate statement 4: incorrect, as temperature falls, not rises.
• Match correct statements (1 and 3) to option A.

Why A is correct:

• Endothermic reactions require energy input per ΔH > 0, absorbing heat and lowering mixture temperature.

Why the others are wrong:

• B pairs 1 (correct) with 4 (incorrect, temperature falls).
• C pairs 2 (incorrect, energy absorbed) with 3 (correct).
• D pairs 2 and 4 (both incorrect, describe exothermic traits).

Final answer: A