In what way does a catalyst help in chemical reactions?\nOptions:\n- (A) Generating heat\n- (B) lowered energy cost\n- (C) metabolic reaction\n- (D) heating liquids\n- (E) by making heat\n- (F) adding heat\n- (G) increases a body's strength\n- (H) preventing heat transfer Think carefully first, then make a decision. My thoughts:
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All chemical reactions require activation energy to get started. Catalysts lower the activation energy. A catalyst can lower the energy cost of a chemical reaction. So the answer is (B).
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