CH221Z General Chemistry I
Explores and applies principles and applications of chemistry. Emphasis on measurement, components of matter, atomic and molecular structure, quantitative relationships including foundational stoichiometry, and major classes of chemical reactions. This course CH 221Z is a lecture course; CH 227Z is the laboratory component. Must be coregistered with CH 227Z. This course is part of Oregon Common Course Numbering. Must take both CH 221Z and CH 227Z to meet the lab science requirement. The PCC Chemistry Department strongly recommends that students take CH 221Z/CH 227Z, CH 222Z/CH 228Z, and CH 223Z/CH 229Z in consecutive terms. Prerequisites: MTH 111, (WR 115 and RD 115) or IRW 115 or equivalent placement, and (CH 151 or pass the CH 151 Competency Exam). Corequisite: CH 227Z. Audit available. (See course content and outcomes.)
Credits: 4
| CRN | Class type | Location | Days & time | Dates | Seats available | Faculty | More info |
|---|---|---|---|---|---|---|---|
| 45240 | In-person | Cascade JH 104 | Monday and Wednesday from 9 to 10:50am | From September 22 through December 10, 2025 | Elizabeth Ntantie | Books for CRN 45240
Class details for CRN 45240 Notes: Registration required with CH227Z CRN 45241 | |
| 45242 | In-person | Cascade JH 104 | Tuesday and Thursday from 9 to 10:50am | From September 23 through December 11, 2025 | Ken L Friedrich | Books for CRN 45242
Class details for CRN 45242 Notes: Registration required with CH227Z CRN 45244 | |
| 45246 | Online (no scheduled meetings) | Not applicable | Available 24/7 | From September 22 through December 12, 2025 | Karen M Radakovich | Books for CRN 45246
Class details for CRN 45246 Notes: Registration required with CH227Z CRN 45247 | |
| and In-person | Rock Creek BLDG7 106 | Friday from 9 to 10:50am | From September 26 through December 12, 2025 | ||||
| 45255 | In-person | Rock Creek BLDG7 210 | Tuesday and Thursday from 10 to 11:50am | From September 23 through December 11, 2025 | Hemali D Premathilake | Books for CRN 45255
Class details for CRN 45255 Notes: Registration required with CH227Z CRN 45256 | |
| 45266 | In-person | Rock Creek BLDG7 106 | Tuesday from 6 to 8:50pm | From September 23 through December 9, 2025 | David A Wallack | Books for CRN 45266
Class details for CRN 45266 Notes: Registration required with CH 227Z CRN 45267 | |
| and In-person | Rock Creek BLDG7 106 | Thursday from 6 to 6:50pm | From September 25 through December 11, 2025 | ||||
| 45264 | In-person | Southeast SCOM 320 | Tuesday and Thursday from 6 to 7:50pm | From September 23 through December 11, 2025 | Mike J Mackel | Books for CRN 45264
Class details for CRN 45264 Notes: Registration required with CH 227Z CRN 45265 | |
| 45257 | In-person | Sylvania ST 309 | Tuesday and Thursday from 12 to 1:50pm | From September 23 through December 11, 2025 | Jim P Schneider | Books for CRN 45257
Class details for CRN 45257 Notes: Registration required with CH227Z CRN 45258 | |
| 45260 | In-person | Sylvania ST 309 | Monday and Wednesday from 2 to 3:50pm | From September 22 through December 10, 2025 | Claire L Boelke | Books for CRN 45260
Class details for CRN 45260 Notes: Registration required with CH 227Z CRN 45261 | |
| 45263 | In-person | Sylvania ST 309 | Monday and Wednesday from 6 to 7:50pm | From September 22 through December 10, 2025 | Jim P Schneider | Books for CRN 45263
Class details for CRN 45263 Notes: Registration required with CH 227Z CRN 45262 |
Class schedule definitions
- Cost:
- cost is based on the number of credits – see tuition and fees
- Books:
- $0 or <$40 means low cost books (doesn't include other supplies like calculators)
- Register:
- use the CRN to register in MyPCC – see how to register
- Class types:
- see more about class types
-
- In-Person: Instructional time will happen in-person. Class meetings take place at specific times and locations.
- Online (no scheduled meetings): Instruction will take place through regular online activities and assignments with scheduled due dates. Classes do not have meeting times.
- Online (scheduled meetings): Instructional time will happen online. Class meetings will take place at scheduled days/times online.
- In-person & Online (scheduled meetings): Class meetings take place at a specific time & day, with some meetings in-person and some online, usually in Zoom.
- In-person & Online (no scheduled meetings): Class meetings are in-person and have additional online activities.
- Online (scheduled meetings) & Online (no scheduled meetings): classes meet remotely with additional online activities required.