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Welcome To The Colorful World Of Substances

Hook students with a chemical 'magic trick' and assess baseline knowledge of everyday acids and bases.

4 lessons5 concepts
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IMAGE

Science Fair Magic Trick

Illustration of the science fair spray bottle trick.

A 3-panel educational comic in hand-drawn ink style with watercolor washes and warm saturated colors, classroom-safe. Panel 1: Two curious students, Ashwin and Keerthi, look confused holding a blank white piece of paper. Panel 2: A cheerful volunteer sprays a clear liquid onto their paper using a small spray bottle. Panel 3: Bold red letters spelling 'Welcome to the Wonderful World of Science' magically appear on the paper, while the students' faces light up with amazement.
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Imagine walking into your school's National Science Day fair. Siblings Ashwin and Keerthi were greeted at the entry gate with a completely blank, white sheet of paper. They wondered, what were they supposed to do with this?

A 3-panel educational comic in hand-drawn ink style with watercolor washes and warm saturated colors, classroom-safe. Panel 1: Two curious students, Ashwin and Keerthi, look confused holding a blank white piece of paper. Panel 2: A cheerful volunteer sprays a clear liquid onto their paper using a small spray bottle. Panel 3: Bold red letters spelling 'Welcome to the Wonderful World of Science' magically appear on the paper, while the students' faces light up with amazement.
Click to zoom

A few steps ahead, a volunteer sprayed a clear liquid onto their blank sheets. Instantly, bold letters appeared out of nowhere: 'Welcome to the Wonderful World of Science'!

Was this a magic trick, or was it chemistry in action?

A 3-panel educational comic in hand-drawn ink style with watercolor washes and warm saturated colors, classroom-safe. Panel 1: Two curious students, Ashwin and Keerthi, look confused holding a blank white piece of paper. Panel 2: A cheerful volunteer sprays a clear liquid onto their paper using a small spray bottle. Panel 3: Bold red letters spelling 'Welcome to the Wonderful World of Science' magically appear on the paper, while the students' faces light up with amazement.
Click to zoom

Their curiosity was sparked. How did the invisible message suddenly reveal itself? In this chapter, we will explore the secret behind this 'trick' and discover the colorful world of acidic, basic, and neutral substances.

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checklist

What do you already know?

Checklist of prerequisite everyday experiences.

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Before You Start — Check What You Know
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quiz

Diagnostic Check

5-question diagnostic covering acids, bases, and indicators.

1 / 5

What do we call a special substance that changes color to show if a liquid is acidic or basic?

Hint

Concept: intro-hook

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Know a Scientist

Father of Modern Indian Chemistry

Brief highlight of Acharya Prafulla Chandra Ray.

Brief highlight of Acharya Prafulla Chandra Ray
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Acharya Prafulla Chandra Ray is known as the 'Father of Modern Indian Chemistry'. After earning his doctorate in the UK, he established India's first pharmaceutical company in 1901 and strongly advocated using the mother tongue as a medium of instruction!

Concepts

01. Acids, Bases, And Litmus

Define acidic, basic, and neutral substances and introduce Litmus as the primary indicator.

02. Nature's Colorful Indicators

Explore other natural indicators like turmeric, red rose extract, and olfactory indicators.

03. The Magic Of Neutralisation

Understand the chemical process of neutralisation and the formation of salt, water, and heat.

04. Neutralisation In Daily Life

Apply the concept of neutralisation to solve real-world problems like ant bites, soil pH, and industrial waste.

05. Chapter Review: Acids, Bases, And Neutralisation

Comprehensive recall, application, and synthesis of the chapter concepts.