General Chemistry Laboratory

Code:

Q1005

Acronym:

Q1005

Level:

100

Keywords
Classification	Keyword
OFICIAL	Chemistry

Instance: 2024/2025 - 2S

Active?	Yes
Web Page:	https://moodle2425.up.pt/course/view.php?id=5490
Responsible unit:	Department of Chemistry and Biochemistry
Course/CS Responsible:	Bachelor in Physics

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L:B	0	Official Study Plan	3	-	3	24	81
L:CC	0	study plan from 2021/22	2	-	3	24	81
			3
L:F	46	Official Study Plan	1	-	3	24	81
			3
L:G	1	study plan from 2017/18	2	-	3	24	81
			3
L:M	2	Official Study Plan	2	-	3	24	81
			3

Teaching language

Portuguese

Objectives

The Chemistry Lab (Q1005) course comprises execution and/or visualization of a set of practical works, involving several experimental techniques and basic procedures in experimental Chemistry.

Learning outcomes and competences

Providing the students with a basic training in chemistry laboratory techniques to be executed and/or visualized.
It is intended that at the end of the semester the student has acquired the following basic skills: to understand how a set of basic unit operations in laboratory chemistry should be correctly performed; to interpret experimental results and prepare written reports of experimental activities.

Working method

B-learning

Program

This course is exclusively composed by lab classes, where students are invited to carry out a number of experiments allowing them to become proficient in most of the unitary operations in experimental Chemistry. Yet, in the exceptional case that presential activities are not possible, experimental activities will be replaced by relevant support materials (e.g., videos, and others), to be made available through the Moodle platform.


PRESENTATION OF THE SCOPE, RULES AND EVALUATION METHODS - 1st CLASS

1. Introduction to the course. Safety rules in the lab.
2. Introduction to basic chemistry calculations and lab operations.

LABORATORY EXPERIMENTS (2 h/week) - following classes as scheduled in the Practical classes manual:

PL1 – Preparation of solutions of approximate and rigorous titer
PL2 – Acid-base titration
PL3 - Purification of a solid by recrystallization
PL4 - Spectrophotometric quantitation of a food colorant
PL5 – Liquid purification by destilation
PL6 – Extraction of caffeine


FINAL INDIVIDUAL EVALUATION

- individual practical examination, where each student will be attributed (part of) one laboratorial activity to execute experimentally; this evaluation will take place in the last couple of weeks of the academic year. In the exceptional case that presential activities cannot be carried out, the practical examination will be replaced by an individual written test, focusing the experimental techniques addressed in the course, as well as the underlying concepts and calculations.

Mandatory literature

Paula Gomes; Manual de Trabalhos Práticos, Laboratório de Química Geral (Q1005) – Trabalhos Práticos;Departamento de Química e Bioquímica – Faculdade de Ciências da Universidade do Porto, 2021

Complementary Bibliography

José A. Martinho Simões, Miguel A. R. Botas Castanho, Isabel M. S. Lampreia, Fernando J. V. Santos, Carlos A. Nieto de Castro, M. Teresa Pamplona, Manuel E. Minas da Piedade; Guia do Laboratório de Química e Bioquímica, 3ª edição, Lidel, Lisboa, 2017
Eduardo Figueira Marques; Notas sobre Erros e Tratamento de Dados em Química, Departamento de Química e Bioquímica – Faculdade de Ciências, Porto, 2012
Madalena M. M. Pinto; “Manual de trabalhos laboratoriais de química orgânica e farmacêutica”, LIDEL, 2011

Teaching methods and learning activities

Laboratory practices and/or supporting materials made available through the Moodle UPorto online platform.

Evaluation Type

Distributed evaluation without final exam

Assessment Components

designation	Weight (%)
Trabalho escrito	40,00
Trabalho laboratorial	60,00
Total:	100,00

Amount of time allocated to each course unit

designation	Time (hours)
Estudo autónomo	57,00
Frequência das aulas	24,00
Total:	81,00

Eligibility for exams

In this practical course it is mandatory to attend classes.

In order to be admitted for final individual evaluation (practical or written, depending on circumstances), and apply for approval at this course, students must attend a minimum of 75% of the total number of planned classes (presential and/or remote), and get a positive assessment on at least 4 out of the 6 reports to be ellaborated and submitted for evaluation.

Students admitted to the individual written test who fail to attend it will be given a zero mark to the test.

Calculation formula of final grade

Continuous assessment without final exam.

Final mark (NF):

NF = 0.70 x NP + 0.30 x NI

where NP is the averaged evaluation from the written reports (1 per group) on lab experiments, and NI is the mark obtained in an individual test (practical or written, depending on the circumstances).


Only students having complied with the attendance requisites specified in the previous field, and having scored an NP ≥ 9 will be admitted to the individual test. There will be no minimum NI score to be approved, and not attending the individual test will correspond to NI = 0 (zero). Approval to the course is only possible when NF ≥ 9.5.

Examinations or Special Assignments

All omitted and unpredicted cases will be addressed on a case by case basis.

Special assessment (TE, DA, ...)

Working students, or students who justifiably, are unable to attend the laboratory classes will also have to ellaborate and submit the reports, based on experimental data supplied, upon request, by their peers or their teachers. These students will also have to perform the final individual test. The final mark (NF) will be calculated by the formula:

NF = 0,50 x NR + 0,50 x NI

Being NR the mark obtained in the reports and NI the mark obtained in the individual test.

Classification improvement

Given the exclusive experimental nature of the Course, final marks can only be enhanced by means of a new enrollment in the course, in a subsequent year.