Chemistry Laboratory I

Code:

Q111

Acronym:

Q111

Keywords
Classification	Keyword
OFICIAL	Chemistry

Instance: 2015/2016 - 1S

Active?	Yes
Web Page:	https://moodle.up.pt/course/view.php?id=728
Responsible unit:	Department of Chemistry and Biochemistry
Course/CS Responsible:	Bachelor in Chemistry

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L:Q	45	Plano de estudos Oficial	1	-	5	-	135

Teaching language

Portuguese

Objectives

The Chemistry Lab I (Q111) course comprises a set of practical works, involving several experimental techniques and procedures. It also provides basic training in information and communication technologies.

Learning outcomes and competences

Providing the students with a basic training in chemistry laboratory techniques and in information and communication technologies, namely computation of some chemical problems.

Working method

Presencial

Program

A1 – Introductory classes - Theoretical-practical lessons (1 h / week)

1. Safety rules.
2. Errors and significant digits
2.1. Handling significant digits
2.2. Precision, accuracy and types of errors
2.3. Error propagation
2.4 Presenting final results
3. Calculations on solution concentrations
4. Acid-base titrations
5. Purification methods
5. Stoichiometric calculations on gases
6. Phase equilibria
7. Absorption of light and the Beer-Lambert Law

A2 – Lab classes (2 h /week)

1. Introduction to the course. Safety rules in the lab.
2. Introduction to basic chemistry lab operations.
3. Laboratory experiments:
PL1 – Preparation of solutions (2 classes).
PL2 – Acid-base titration.
PL3 – Purification by recrystalization.
PL4 – Determination of the stoichiometry of a reaction.
PL5 – Destilation of a water-acetone mixture.
PL6 – Spectrophotometric determination of a food dye.
4. Discussion
5. Individual practical assessment


A3 – Information and communication technologies (ICT) (1 h / week)

1. Searching for scientific information in the internet: a few data bases (Brookhaven Protein Data Bank-PDB; NIST Chemistry Web Book; ISI Web of Science).
2. Using spreasheets
2.1. Handling data and basic calculations.
2.2. Statistical analysis of experimental data. Descriptive statistics; Confidence interval.
2.3. Data plotting.
2.4. Fitting a function to experimental data. Least-squares method; linear regression; interpolation in calibration curves – particular case of a straight line.
2.5. Using the Solver tool to obtain the roots of nonlinear equations.

The last two weeks include the ICT assessment tests.

Mandatory literature

Manual de Trabalhos Práticos;Laboratório de Química I (Q111) – Trabalhos Práticos; Departamento de Química e Bioquímica – Faculdade de Ciências, Porto, 2015
Eduardo Figueira Marques; Notas sobre Erros e Tratamento de Dados em Química, Departamento de Química e Bioquímica – Faculdade de Ciências, Porto, 2012

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. De Fátima Norberto, M. Teresa Pamplona, Lurdes Mira e M. Margarida Meireles; Guia do Laboratório de Química e Bioquímica, 2ª edição, Lidel, Lisboa, 2008
Manuel A. V. Ribeiro da Silva; Técnicas Laboratoriais, Departamento de Química – Faculdade de Ciências, Porto, 1977
Manuel A. V. Ribeiro da Silva e Maria das Dores M. C. Ribeiro da Silva; Técnicas Laboratoriais – Trabalhos Práticos, Departamento de Química – Faculdade de Ciências, Porto, 1977

Teaching methods and learning activities

Theoretical-practical lessons, laboratory classes and online classes.

Evaluation Type

Distributed evaluation without final exam

Assessment Components

designation	Weight (%)
Teste	25,00
Trabalho laboratorial	75,00
Total:	100,00

Eligibility for exams

Continuous assessment without final exam. Maximum allowed number of absences: 1/4 of the total number of classes; 1/3 of laboratory experiments.

Calculation formula of final grade

Practical lab mark:
NLAB = 0.50 x NTP + 0.50 x NAP
where NTP is the average grade of all 6 practical laborations and NAP is the individual lab assessment mark

The final grade, NF, is calculated according to:
NF = 0.75 x NLAB + 0.25 x NTIC
where NTIC is the grade on the ICT part.

Approval requires NTP ≥ 10, NAP ≥ 8 and NTIC ≥ 8.