CH221Z General Chemistry I

Class Schedule

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. 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. This course is part of Oregon Common Course Numbering. MTH 243, STAT 243, and STAT 243Z courses do not meet the MTH 111 prerequisite for CH 221Z. 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

List of classes for CH221Z General Chemistry I
CRN	Class type	Location	Days & time	Dates	Faculty	More info
25831	In-person	Cascade JH 104	Monday and Wednesday from 9 to 10:50am	From March 30 through June 10, 2026	Elizabeth Ntantie	Books for CRN 25831 Class details for CRN 25831 Notes: Registration required with CH227Z CRN: 25832
24986	In-person	Rock Creek BLDG7 212	Tuesday and Thursday from 10 to 11:50am	From March 31 through June 11, 2026	David A Wallack	Books for CRN 24986 Class details for CRN 24986 Notes: Registration required with CH227Z CRN:24987
24988	In-person	Rock Creek BLDG7 214	Monday and Wednesday from 10 to 11:50am	From March 30 through June 10, 2026	Hemali D Premathilake	Books for CRN 24988 Class details for CRN 24988 Notes: Registration required with CH227Z CRN:24989
24994	In-person	Rock Creek BLDG7 106	Monday from 6 to 8:50pm	From March 30 through June 8, 2026	Japhe F Rauscher	Books for CRN 24994 Class details for CRN 24994 Notes: Registration required with CH227Z CRN:24995
24994	and In-person	Rock Creek BLDG7 106	Wednesday from 6 to 6:50pm	From April 1 through June 10, 2026	Japhe F Rauscher
24984	In-person	Southeast SCOM 320	Tuesday and Thursday from 2:30 to 4:20pm	From March 31 through June 11, 2026	Mark Lowry	Books for CRN 24984 Class details for CRN 24984 Notes: Registration required with CH227Z CRN:24985
24990	In-person	Sylvania ST 309	Monday and Wednesday from 12 to 1:50pm	From March 30 through June 10, 2026	Jim P Schneider	Books for CRN 24990 Class details for CRN 24990 Notes: Registration required with CH227Z CRN:24991
24992	In-person	Sylvania ST 309	Tuesday and Thursday from 9 to 10:50am	From March 31 through June 11, 2026	Katie A Standish	Books for CRN 24992 Class details for CRN 24992 Notes: Registration required with CH227Z CRN:24993

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.