Margaret goes on holiday to the seaside. She notices some iron
railings on the beach that are often in contact with the seawater.
They are very rusty. The iron railings in front of her hotel, some
distance from the sea, are much less rusty.
Margaret predicts that seawater makes iron rust faster thân rai
water.

Design an investigation to test Margaret's prediction.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next