A student working in lab is reacting calcium oxide with water by dropping lumps of calcium oxide into the distilled water. CaO (s) + H2O (ℓ) → Ca(OH)2 (aq) Which actions or changes can the student make to increase the number of effective collisions between CaO and H2O? [Specify all that are correct.] Group of answer choices - Use a larger beaker. - Add heat. - Decrease the amount of water. - Grind up the lumps of calcium oxide. - Use a catalyst.

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