Lesson Notes By Weeks and Term - Senior Secondary 2

Nitrogen 3

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TERM: 2ND TERM

WEEK TEN

Class: Senior Secondary School 2

Age: 16 years

Duration: 40 minutes of 5 periods each

Date:        

Subject: Chemistry

Topic:-        NITROGEN 3

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

  1. Identify the uses of Nitrogen.
  2. Draw and explain the Nitrogen cycle.

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S ACTIVITY

STEP 1

INTRODUCTION

The teacher discusses the uses of Nitrogen to the students.

Students pay attention

STEP 2

EXPLANATION

Teacher draw and explain the Nitrogen cycle.

 

Students pay attention and participates

STEP 3

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

NITROGEN 3

Uses of Nitrogen

Nitrogen has diverse applications across various fields:

  1. Fertilizer Production: Nitrogen is a key component in the production of ammonia, a fundamental ingredient in fertilizers.
  2. Food Industry: It is used in food packaging to displace oxygen and extend the shelf life of perishable goods.
  3. Chemical Industry: Nitrogen is utilized in various chemical processes, such as the production of nitric acid and other nitrogen-containing compounds.
  4. Metallurgy: In metal industries, nitrogen is employed for processes like heat treatment and as a shielding gas during welding.
  5. Electronics: Nitrogen is used in the electronics industry to create inert atmospheres during semiconductor manufacturing.
  6. Pharmaceuticals: It plays a role in pharmaceutical manufacturing, helping to prevent oxidation and maintain product quality.

Nitrogen cycle

The nitrogen cycle is a vital natural process that describes how nitrogen moves through the environment, transitioning between different forms and locations. It involves several key steps:

  1. Nitrogen Fixation: This is the process by which atmospheric nitrogen (N2) is converted into ammonia (NH3) or related compounds. This can occur through various mechanisms, including the activity of nitrogen-fixing bacteria in soil or symbiotic relationships with certain plants.
  2. Ammonification: Decomposers break down organic matter (such as dead plants and animals) into ammonia. This is the first step in converting organic nitrogen into inorganic forms.
  3. Nitrification: Ammonia is converted into nitrite (NO2-) and then into nitrate (NO3-) by nitrifying bacteria. Nitrate is a form of nitrogen that plants can readily absorb from the soil.
  4. Assimilation: Plants take up nitrate or ammonium ions from the soil to use as a nitrogen source for their growth and development.
  5. Denitrification: This process involves the conversion of nitrates back into nitrogen gas (N2) or other gaseous nitrogen compounds. Denitrifying bacteria facilitate this step, releasing nitrogen back into the atmosphere.

NOTE: Nitrogen cycle is crucial for maintaining the availability of nitrogen in ecosystems. It involves interactions between living organisms, soil, water, and the atmosphere, contributing to the sustainability of life on Earth.

EVALUATION: - Identify 4 uses of Nitrogen.

                          -  Draw and give a summary of he Nitrogen cycle.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively