Question

classify the following chemical reactions as exothermic or endothermic.
drag & drop the answer
two liquids react and their temperature increases
two liquids react and their temperature decreases

exothermic
wood bi
tnt expl

endothermic

Explanation:

Step 1: Recall definitions

Exothermic reactions release heat (temperature of surroundings or reactants increases). Endothermic reactions absorb heat (temperature of reactants decreases).

Step 2: Classify each reaction

• "Two liquids react and their temperature increases": Releases heat → exothermic.
• "Two liquids react and their temperature decreases": Absorbs heat → endothermic.
• "Wood burning" (wood + O₂ → CO₂ + H₂O + heat): Releases heat → exothermic.
• "TNT explosion" (releases large amount of heat/energy): Releases heat → exothermic.

Answer:

• "two liquids react and their temperature increases" → exothermic
• "two liquids react and their temperature decreases" → endothermic
• "wood burning" → exothermic
• "TNT explosion" → exothermic