Dissolving in Daily Life Notes & Questions | Class 3 Environmental Studies (EVS) | Drishti OS

Dissolving in Daily Life

What you'll learn

Dissolving is used every day at home — in tea, lemonade, ORS, and bath salts.
Dissolving lets us spread a small amount of flavour, medicine, or fragrance evenly through a liquid.
ORS dissolved in water helps sick people get salts and sugar quickly.
Kitchens use dissolving daily: sugar in tea, salt in dal, sugar and salt in lemonade.

Key concepts

Level 1 — Core idea

Verbal: When ORS powder is stirred into water, it disappears but spreads its salts and sugar through the whole glass, helping a sick person feel better.

Symbolic: Dissolving at home = flavour/medicine + water -> useful drink.

Visual: A jug of lemonade looks clear and yellow — the sugar and salt are dissolved evenly throughout, not sitting at the bottom.

Level 2 — Going deeper

Dissolving is not just a science idea — it happens in kitchens, bathrooms, and hospitals every day, from tea to medicine to bath time.

NCERT anchor

NCERT Looking Around 3, Chapter 6 (Food We Eat) — dissolving sugar and salt while cooking and preparing drinks.

Worked example

Why is ORS given as a dissolved drink instead of dry powder?

Step 1 — Dry powder cannot be swallowed easily by a sick person.
Step 2 — Dissolved in water, it becomes an easy-to-drink liquid with salts spread evenly.
Answer: **Dissolving makes ORS easy and safe to drink.**

Is sugar dissolved when you make sweet tea?

Step 1 — Sugar is stirred into hot tea.
Step 2 — It disappears from sight but the tea tastes sweet.
Answer: **Yes** — the sugar has dissolved.

Common mistakes

Mistake	Why	Fix
Dissolving is only a lab idea	Thinking science is separate from home life	Dissolving happens daily — tea, lemonade, ORS
Medicines are always swallowed dry	Not knowing some dissolve in water first	Some tablets/powders dissolve in water before drinking
Bath salts do nothing in water	Never observing bath time closely	Bath salts dissolve and release fragrance
Lemonade has no dissolved parts	Only noticing the lemon juice	Sugar and salt are dissolved in lemonade too

Quick check

Name one drink made using dissolving.
Why is ORS mixed with water?
What dissolves in bathwater to make it smell nice?
Stretch: List three things at home that use dissolving.

Revision tip: Look around your kitchen and bathroom — dissolving is happening more often than you think!

Open the Practice tab for graded questions on Dissolving in Daily Life.

Dissolving in Daily Life