Lesson Notes By Weeks and Term v4 - SHS 3
MATTER AND ITS PROPERTIES
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MATTER AND ITS PROPERTIES
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Subject: Chemistry
Class: SHS 3
Term: 1st Term
Week: 1
Grade code: 1.1.1.LI.2
Strand code: 1
Sub-strand code: 1
Content standard code: 1.1.1.CS.1
Indicator code: 1.1.1.LI.2
Theme: PHYSICAL CHEMISTRY
Subtheme: MATTER AND ITS PROPERTIES
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My dear students, welcome to the fascinating world of Chemistry! This subject is not just about theories and equations; it's a practical, hands-on science. We will be conducting experiments to see chemistry in action. However, the chemicals and equipment we use have specific properties that can be dangerous if not handled with care and respect. This lesson is arguably the most important one you will have, as it is about keeping you, your classmates, and your teacher safe. Understanding laboratory safety is not just for passing exams; it is a life skill.
Introduction: Why Safety First?
The chemistry laboratory is a place for discovery, but it contains substances with various properties. Some are flammable (can catch fire), some are corrosive (can burn your skin), and others are toxic (can poison you). These are all inherent properties of matter. Our safety rules are not to make life difficult, but to manage the risks associated with these properties. An accident in the lab can cause serious injury, damage equipment, and destroy experiments. A safe scientist is a good scientist. Part A: General Laboratory Safety Rules (The 'Dos' and 'Don'ts')
These are the fundamental rules that must be followed at all times.
The 'Dos' (What you MUST do): ALWAYS wear appropriate Personal Protective Equipment (PPE), especially safety goggles and a laboratory coat. ALWAYS listen to your teacher's instructions carefully before starting any experiment. If you are unsure, ASK. ALWAYS know the location and use of safety equipment like the fire extinguisher, eyewash station, and first aid kit. ALWAYS keep your workspace clean and organised. ALWAYS label all containers clearly with their contents. ALWAYS report any accident, spill, or injury to your teacher immediately, no matter how small it seems. ALWAYS wash your hands thoroughly with soap and water before leaving the laboratory. ALWAYS handle glassware with care. Check for cracks or chips before use. When diluting a concentrated acid, ALWAYS add the Acid to the Water slowly (Remember: A&W, like the drink). Never the other way around. ALWAYS dispose of chemical waste in the designated waste containers as instructed by your teacher.