1.

Complete the following statements: (a) The chemical change involving iron and hydrochloric acid illustrates a ___ reaction. (b) In the type of reaction called ___ two compounds exchange their positive and negative redicals. (c) A catalyst either ___ or ___ the rate of a chemical change but itself remains ___ at the end of the reaction.

Answer»

Complete the following statements:

(a) The chemical change involving iron and hydrochloric acid illustrates a ___ reaction.

(b) In the type of reaction called ___ two compounds exchange their positive and negative redicals.

(c) A catalyst either ___ or ___ the rate of a chemical change but itself remains ___ at the end of the reaction.



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