Lesson Notes By Weeks and Term - Senior Secondary 3

TERM׃ 2^ND TERM

WEEK ONE

Class: Senior Secondary School 3

Age: 17 years

Duration: 40 minutes of 5 periods each

Date:

Subject: Chemistry

Topic: Ethical, legal and social issues

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Identify chemical industries in Nigeria
2. Identify the adverse effects of chemical waste on the environment.
3. Discuss the role of government in preventing chemical degradation.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

ETHICAL, LEGAL AND SOCIAL ISSUES

Chemical Waste

Chemical waste encompasses a broad category of materials that pose potential risks to human health and the environment due to their toxic, flammable, corrosive, or reactive nature. This waste is generated across various sectors, including industrial, academic, healthcare, and research facilities. The responsible management of chemical waste is essential to mitigate the adverse effects on ecosystems and public well-being.

 Some of the far-reaching adverse effects on the environment, includes;

1. Water Pollution: Improper disposal of chemical waste can contaminate water bodies, affecting aquatic ecosystems and harming marine life. This pollution can persist for long periods, causing lasting damage.
2. Soil Contamination: Chemical waste can seep into the soil, affecting the quality of agricultural land and posing risks to plants, animals, and humans. It can disrupt the natural balance of ecosystems and degrade soil fertility.
3. Air Pollution: Burning or release of certain chemical wastes can lead to air pollution, contributing to respiratory problems and other health issues for humans and wildlife. It may also lead to the formation of acid rain, impacting vegetation and water bodies.
4. Biodiversity Loss: Chemical waste can have detrimental effects on various species, leading to the decline of certain populations and disrupting food chains. This, in turn, can result in a loss of biodiversity and ecological imbalances.
5. Long-term Environmental Damage: Certain chemicals in waste may persist in the environment for extended periods, causing chronic and cumulative damage to ecosystems. This can have lasting effects on the health of both the environment and living organisms.

Industrial pollutants

Industrial pollutants are substances released into the environment as a result of industrial activities. They can include air emissions, water discharges, and soil contamination, posing environmental and health risks. Common examples are heavy metals, chemicals, and particulate matter. Efforts to mitigate industrial pollution involve regulatory measures, technology improvements, and sustainable practices.

Roles of governments in preventing chemical degradation

Governments play crucial roles in preventing chemical degradation through various measures:

1. Legislation: Governments establish laws and regulations to control the use, production, and disposal of chemicals. These laws set the framework for responsible practices and provide guidelines for industries to follow.
2. Setting Minimum Standards: Governments define minimum standards for the handling, storage, and disposal of chemicals to ensure environmental protection and public safety. These standards serve as benchmarks for industries to meet or exceed in their operations.
3. Enforcement of Standards: Governments enforce regulations through monitoring, inspections, and penalties for non-compliance. This enforcement ensures that industries adhere to established standards, encouraging responsible chemical management.

NOTE: By combining legislation, setting minimum standards, and enforcing regulations, governments aim to create a regulatory environment that promotes sustainable and safe chemical practices, minimizing the risk of chemical degradation.

EVALUATION:   1. What are industrial pollutants.

2. Discuss 4 adverse effects of chemical waste on the environment
3. Explain the roles of governments in preventing chemical degradation

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively