The word "chance" is a noun right? The sentence is "People at a party welcome a chance to make a big impression." And "other" would be a pronoun... right? It says "If you let other people impress you, they will be impressed by your graciousness."

Answer 1

You're right about "chance" being a noun.

"Other" occasionally is used as a pronoun -- but not very often.

Check these definitions to see how "other" is most commonly used. Does that part of speech fit your sentence?

http://dictionary.reference.com/browse/other

Answer 2

Chance can also be used as a verb and an adjective. In this case it IS a noun.

Other in that case would be an adjective.... it describes people.....ie, these people, those people, some people, other people.