Chemistry Laboratory

Code:

Q121

Acronym:

Q121

Keywords
Classification	Keyword
OFICIAL	Chemistry

Instance: 2010/2011 - 1S

Active?	Yes
Web Page:	http://elearning2.fc.up.pt/aulasweb0910/course/view.php?id=1559
Responsible unit:	Department of Chemistry and Biochemistry
Course/CS Responsible:	Bachelor in Biochemistry

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L:BQ	77	Plano de Estudos a partir de 2007	1	-	7,5	-

Teaching language

Portuguese

Objectives

The Chemistry Lab (Q121) course comprises a set of practical works, involving several experimental techniques and procedures with the aim of providing the students with a basic training in chemistry laboratory techniques. It also provides basic training in information and communication technologies: search of scientific information on the Internet and computation of some chemical problems.

Program

A1 – Lab classes (3 h / week)

Class 1. Introduction to the course. Safety rules in the lab.

Class 2. Introduction to basic chemistry lab operations.

Classes 3-9. Pratical laborations:

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.

Class 10: Discussion

Classes 11-12: Individual practical assessment


A2 – Information and communication technologies (ICT) (1 h / week)

1. Handling worksheets
1.1. Statistical analysis of experimental results
1.2. Handling data and basic calculations
1.3. Data plotting and fitting
2. Internet
2.1. Introduction
2.2. Searching for scientific information on the internet
2.3. Handling scientific information.
The last two weeks include assessment tests.


A3 – Introductory/problem-solving classes (1 h / week)

1. Safety rules - short film viewing and discussion.
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
6.1. Phase diagrams of binary mixtures
6.2. Simple and fractional distillation
7. Absorption of light and the Beer-Lambert Law


Bibliography

Laboratório de Química (Q121) − Trabalhos Práticos, Departamento de Química e Bioquímica - Faculdade de Ciências, Porto, 2010.

Guia do Laboratório de Química e Bioquímica, 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, Lidel, Lisboa, 2000.

Breves Notas sobre Segurança em Laboratórios de Química, Ana Paula S. M. C. Carvalho, Maria das Dores M. C. Ribeiro da Silva e Manuel A. V. Ribeiro da Silva, Departamento de Química - Faculdade de Ciências, Porto, 1999.

Técnicas Laboratoriais, Manuel A. V. Ribeiro da Silva, Departamento de Química - Faculdade de Ciências, Porto, 1977.

Técnicas Laboratoriais − Trabalhos Práticos, Manuel A. V. Ribeiro da Silva e Maria das Dores M. C. Ribeiro da Silva, Departamento de Química - Faculdade de Ciências, Porto, 1977.

Notas sobre erros e tratamento de dados em Química, Eduardo Figueira Marques, Departamento de Química - Faculdade de Ciências, Porto, 2004.

Fundamental do Excel 2007, Maria José Sousa, FCA, Lisboa, 2007.

Evaluation Type

Distributed evaluation without final exam

Assessment Components

Description	Type	Time (hours)	Weight (%)	End date
Attendance (estimated)	Participação presencial	70,00
	Total:	-	0,00

Eligibility for exams

Continuous assessment without final examination. Maximum allowed number of absences: 1/4 of the total number of problem-solving classes; 1/3 of pratical laborations.

Calculation formula of final grade

Practical lab mark:

NLAB = 0,50 x NTP + 0,50 x NAPI

where NTP is the average grade of all 6 practical laborations and NAPI is the individual lab assessment

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, NAPI≥8 and NTIC≥8.