SCHEDA CATALOGO
Title
Safe Chemistry
Authors
Allida De Candido – Claudia De Candido
Schools
IPSIA Zanussi ITC Mattiussi
Subject
Chemistry
Grade Level
First classes - Secondary School.
Time
Approximately 6 hours (January).
Language
A2
level
Prerequisites Physical properties of matter, chemical reactions.
Contents
Hazard symbols, risks and precautions.
Chemical labels.
Material safety data sheet (MSDS).
Safety rules.
Experiment and safety schedule.
Materials
Devices
Overview
Photocopies, books, computer, internet.
VHS, Science Lab, Overhead projector, Video projector
The Chemistry Lab and chemicals in it are potentially hazardous. Safe
practice and a high level of awareness of risks must be maintained at all
times.
The students must understand and follow the rules of practical work. They
must look at the labels of chemicals and make sure that they are familiar
with the hazard warnings and the safety signs. It is good practice to treat all
chemicals and household products with care and follow the specific
instruction to limit the environmental damage.
Objectives
Chemistry module
Safe Chemistry
The students will be able to:
 recognize and name each hazard symbol;
 explain what each hazard symbol means;
 understand the chemical labels;
 understand MSDS (Material safety data sheets);
 know the precautions using the chemical products;
 extend the precautions to the household products;
 follow the safety rules in practical work.
Page 1
LESSON PLAN Lesson 1 (1h)
Introduce the hazard symbols to the students, showing labels of chemical
or household products. Reinforce visual recognition of the hazard and the
meaning (Worksheets: definition match, symbol identification sheets,
reading). Slide: hazard symbols.
Keywords: corrosive, irritant, flammable, oxidising, toxic, harmful, hazard
symbol, chemical.
Lesson 2 (1h)
Review (Crossword). Read the labels on Hazardous Household Chemicals
or on Lab Chemicals: (name, hazard symbol, R phrases, S phrases,
manufacturer, address).
Keywords: label, handle, protective equipment, gloves, fume hood, volatile
substance.
Lesson 3 (1h)
Review (questions about labels).
Show the picture with a different assumption of the chemical. Link the
picture to the name.
Find specific information of chemical in a Material Safety Data Sheet
(MSDS).) Answer the questions.
Show the poster with the rules in the chemistry lab. Read the rules and
complete the exercises (“filling in the gaps and prediction). Complete the
worksheet about wrong behaviour in a lab.
Keywords: inhalation, ingestion, absorption, injection, eye contact, spill.
Lesson 4 (1h)
Review: show the pictures of the poster and ask what they mean.
Read the safety schedule about an experiment and do it safely. Answer the
questions about the experiment.
Keywords: acid, base, salt, chemical reaction, solution test tube, beaker,
pipette, dilute, concentrated, soluble.
Lesson 5 (2h)
Review: game with questions.
Final test
Evaluation
Chemistry module
Safe Chemistry
Page 2
Experiments
1. Chemical reactions.
Resources
Lawrie Ryan. - Chemistry for you - (2001) - Thornes Publishers.
B.Mc Duell. (2002). GCSE Chemistry. Letts.
Geoff Neuss – Chemistry – (2001) - Oxford
Internet:
GSCE Chemistry
www.lehigh.edu/~inehs/hazcom.htm
Suggestions
Evaluation
What the students need to do:
 take notes and take part in the lessons
 ask if they don’t understand.
 practice and revise even when the teacher doesn’t tell you
 during the experiments follow instructions carefully
There is a one-hour test (questions, multiple matching, filling in the gaps).
The teacher evaluates also participation and interest in the activities.
During the lessons the students can evaluate their own improvements
through activities on the experiments single or in-group.
What makes an A, B or C grade candidate
Grade C: minimum level
The minimum % for a C is approximately 60% marks
Grade B
Candidates will have a reasonable knowledge of the topics
Grade A
Candidates have a wide knowledge and can apply the topics to new
situations. Marks > 85%
Chemistry module
Safe Chemistry
Page 3