Introduces the basic principles and techniques of synthesis and analysis and develops the laboratory skills and precision that are fundamental to experimental chemistry. Limited enrollment. Students entering in the academic year 2020 and before must take Ch 3 in their first nine terms of residence in order to be graded pass/fail. First-year undergraduate students entering in the academic year 2021 and thereafter must take Ch 3 in their first six terms of residence in order to be graded pass/fail. Ch 3 a and Ch 3 x both satisfy the institute's Core requirement for a Chemistry Laboratory.