Uses of Matter
How we use solids, liquids, and gases daily.
Uses of Matter
Uses of Matter
What you'll learn
- How we use solids, liquids, and gases every day.
- Choose material by property — metal strong, water to drink.
- Reduce waste — reuse matter wisely.
- Looking Around 3 — food, water, and shelter materials.
Key concepts
Level 1 — Core idea
Verbal: Wood (solid) builds furniture; water (liquid) quenches thirst; air (gas) for breathing.
Symbolic: Property → use: hard stone → grinding; flexible rubber → tyres.
Visual: Home map: label matter types in kitchen, bathroom, bedroom.
Level 2 — Going deeper
Wrong material = problem: paper umbrella fails; plastic bottle reused for water if safe. Match use to property.
NCERT anchor
NCERT Looking Around 3, Chapter 14 and Chapter 6 discuss food materials and utensils. Notice matter around meals.
Worked example
Why drink water (liquid) not rock (solid)?
Step 1 — Body needs **liquid** water to absorb
Step 2 — Rock hard, not drinkable, no nutrient use
Answer: **Property fits need** ✓
LPG gas for cooking — which state and why useful?
Step 1 — Gas burns with clean flame when controlled
Step 2 — Stored in cylinder as **liquefied gas** for transport
Answer: **Gas fuel** — quick heat for cooking
Common mistakes
| Mistake | Why | Fix |
|---|---|---|
| Any matter good for drinking | Forget safety | Only safe liquids like potable water |
| Gas not useful | Invisible useless idea | Air for breath; fuel gas for cooking |
| One property enough for all uses | Hard = always best | Match several properties to job |
| Plastic and food always safe | Reuse any bottle | Ask adult — food-grade matters |
Quick check
- One use each for solid, liquid, gas.
- Why metal for spoon not paper?
- Name matter used in your school bag.
- Stretch: Why glass for windows but wood for door?
Revision tip: Pick one object; list its state and two uses linked to properties.
Open the Practice tab for graded questions on Uses of Matter.
Key Takeaways (TL;DR)
- What you'll learn
- Key concepts
- Worked example
- Common mistakes
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