Basic Electricity - Senior Secondary 1 - Project and practical work

TERM: 3^RD TERM

WEEK ELEVEN

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC ELECTRICITY

Topic: PROJECT AND PRACTICAL WORK

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

I.) Prepare an electrolyte

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

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

PROJECT AND PRACTICAL WORK

Prepare an electrolyte

To prepare a simple electrolyte solution, you can create a solution of common table salt (sodium chloride, NaCl) dissolved in water. Here's how to prepare an electrolyte solution:

Materials Needed:

- Sodium chloride (table salt)

- Distilled water

- Stirring rod or spoon

- Measuring cup or scale

- Container for mixing

Procedure:

1. Measure the Ingredients:

   - Measure the desired amount of sodium chloride (NaCl) using a measuring cup or scale. The concentration of the electrolyte solution will depend on your specific application.

   - A common concentration for a simple electrolyte solution is 0.9% NaCl, which is equivalent to 9 grams of NaCl per liter of water. This concentration is often used in medical applications such as saline solution.

2. Dissolve Sodium Chloride in Water:

   - Pour the measured amount of sodium chloride into a clean container.

   - Add distilled water to the container, slowly stirring with a stirring rod or spoon to dissolve the salt completely.

   - Continue adding water and stirring until all the salt is dissolved and the solution is clear.

3. Adjust the Concentration (Optional):

   - If necessary, adjust the concentration of the electrolyte solution by adding more salt to increase the concentration or more water to decrease the concentration.

4. Filter or Clarify the Solution (Optional):

   - If the solution contains any undissolved particles or impurities, filter it through a clean filter paper or allow it to settle, then carefully decant the clear solution into a clean container.

5. Label and Store the Solution:

   - Label the container with the name of the solution (e.g., "0.9% NaCl Electrolyte Solution") and the date of preparation.

   - Store the electrolyte solution in a clean, sealed container at room temperature until ready to use.

EVALUATION: 1. Teacher evaluates the students based on their performance from the practical session

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively