what are my chances

What are my changes for the following colleges.

1) Northwestern IL, 2) Norte Dame IN, 3) Rice TX 4) Columbia NY

I have a ACT composite of 33 and GPA of 3.95 unweighted.I also have 4 AP classes (3 scores pending in my senior year). I also have 4 college courses with credits from University of IOWA (2 courses "Introduction to Engineering" & "Introduction to Enngineering Design") I had A's on all my AP and college courses.

I am also a National Merit scholar.

Extra curriculars 1) Volunteer at the local hospital 2 hours every week. 2) Job at the library 9 hours every week 3) Play the Piano and Cello in the school orchestra (7 hours every week).

I chanced you on all your colleges. You should get in at NU (#16), Notre Dame (#32) and Rice (#25). Columbia (#40) is a reach. Columbia and Notre Dame are not noted for Chemical Engineering. Some top Chemical Engineering schools that you may want to add to your list are:

UC - Berkeley (#3), U of M - Twin Cities (#4), UT - Austin (#8), UI - Urbana-Champaign (#11), U of M - Ann Arbor (#12) and Georgia Tech (#14). You can likely get merit scholorships from these Universities as well as from UW - Madison (#6). Any award from the "privates" would likely be financial need based.

Take a hard look at Georgia Tech, it is great in engineering across the board and has an outstanding co-op program. Otherwise, if you want to stay midwest, Madison is hard to beat. For me, the deciding factors were: midwest region, merit scholarship $$$ and honors program reputation.

I think you have a chance at all 4 of the college you will do well