Lesson Notes By Weeks and Term - Senior Secondary 1

Chemical industries

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Term: 1st Term

Week: 3

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:       

Subject:      Chemistry

Topic:-       Chemical Industries

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

  1. Define chemicals
  2. List and explain the types of chemicals
  3. Define chemical industries
  4. List and explain the types of chemical industries based on their products

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 reviews the previous lesson on introduction to chemistry

Students pay attention

STEP 2

EXPLANATION

He defines chemicals. He lists and explains the types of chemicals

 

Students pay attention and participates

STEP 3

DEMONSTRATION

He defines chemical industries. He lists and explains the types of chemical industries based on their products

Students pay attention and participate

STEP 4

NOTE TAKING

The teacher writes a summarized note on the board

The students copy the note in their books

 

NOTE

CHEMICAL INDUSTRIES

A chemical is a distinct compound or substance, especially one which has been artificially prepared or purified.

  1. Heavy chemical; a chemical produced and handled in large quantity and often in a more or less crude state. Examples include acids, alkalis, and salts (H2SO4, NaOH, Na2CO3)
  2. Fine chemical: a chemical produced and handled in relatively small amounts and usually in a more or less pure state. Examples include; Detergents, perfumes, preservatives, etc.

 

Chemical industries are industries that use chemical substances at one stage or the other to produce other chemicals. The substance chemical industries use are called raw materials in chemical terms.

Chemical industries can also be divided into the following according to their products.

  1. Glass industries have their end product as glass of various forms and shapes using sand, sodium hydroxides, clay in intense temperature and catalysts and colourant when needed
  2. Ceramics industries use clay as base raw materials, sodium chloride as fine chemical in the presence of intense heat
  3. Pharmaceutical industries use both organic, inorganic and synthetic raw materials and chemicals to produce drugs as preventives and curative. As purgative or sedatives, stimulants etc
  1. Metallurgical industries work on ores of metals by extraction processes adding other raw materials where necessary for specific uses and purposes
  2. Fertilizer industries use inorganic chemicals such as Nitrogen, phosphorus and potassium in predetermined ratios and quantities with other additives. The core mandate of these industries is to improve and increase the yield of agricultural products with the soil as the contact point
  3. Paints industries use purely inorganic chemical and pigments to produce their product in different colours with the view to add colour and glamour to other products.

 

EVALUATION:    1. Define chemical

  1. List and explain the types of chemicals
  2. Define chemical industries
  3. List and explain the types of chemical industries

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively