alkali (e.g. phenolphthalein). Neutralization reaction is a reaction between an acid and an alkali to form salt and water. pH (potential hydrogen) is a measure of how acidic or basic a substance is. pH scale is an instrument used to measure the pH of substances (e.g. an acid or alkali) PRIOR LEARNING: Check that students can classify substances based on identified properties. LEARNING OUTCOME: Students who demonstrate understanding can: Classify substances as acids and alkalis Cite evidence to determine acidity or alkalinity of a substance Create homemade acid-base indicators Conduct investigations on acids and alkalis Work cooperatively in groups Navigate and manipulate digital content on storage. ASSESSMENT CRITERIA: Use of scientific skills Creativity-in terms of presentation Content PROCEDURES/ACTIVITIES Engage: Two students will be selected and ask to taste a piece of lime and a mango. Farmer Joe planted a plot of pepper and realized that a number of them did not grow well while some died. After investigations by soil experts he was informed that the soil was “sour”. He applied white lime to the soil and the next crop he got a better yield. What was the taste of the lime vs cane? Why did the lime taste sour? Why did the mango taste sweet? What does the expert mean by the soil is “sour?” Why did the farmer add white lime to the soil? Why do you think after addition of the white lime there was a better yield? Explore: In groups, students will be given: Beakers containing different solutions (acidic, basic and neutral) Blue and red litmus paper pH papers and universal indicator solutions
alkali (e.g. phenolphthalein). Neutralization reaction is a reaction between an acid and an alkali to form salt and water. pH (potential hydrogen) is a measure of how acidic or basic a substance is. pH scale is an instrument used to measure the pH of substances (e.g. an acid or alkali) PRIOR LEARNING: Check that students can classify substances based on identified properties. LEARNING OUTCOME: Students who demonstrate understanding can: Classify substances as acids and alkalis Cite evidence to determine acidity or alkalinity of a substance Create homemade acid-base indicators Conduct investigations on acids and alkalis Work cooperatively in groups Navigate and manipulate digital content on storage. ASSESSMENT CRITERIA: Use of scientific skills Creativity-in terms of presentation Content PROCEDURES/ACTIVITIES Engage: Two students will be selected and ask to taste a piece of lime and a mango. Farmer Joe planted a plot of pepper and realized that a number of them did not grow well while some died. After investigations by soil experts he was informed that the soil was “sour”. He applied white lime to the soil and the next crop he got a better yield. What was the taste of the lime vs cane? Why did the lime taste sour? Why did the mango taste sweet? What does the expert mean by the soil is “sour?” Why did the farmer add white lime to the soil? Why do you think after addition of the white lime there was a better yield? Explore: In groups, students will be given: Beakers containing different solutions (acidic, basic and neutral) Blue and red litmus paper pH papers and universal indicator solutions
5e-lesson-plan-group-4.docx