Things That Do Not Melt
Things That Melt: Things That Do Not Melt
Things That Do Not Melt
Things That Do Not Melt
NCERT anchor: NCERT Looking Around Class 1 — Theme: Materials (comparing melting and non-melting objects)
What you will learn
- Not everything melts like ice or chocolate.
- A stone, a steel spoon, a wooden block, and a plastic toy stay solid even on a warm day.
- Comparing melting and non-melting things helps us choose the right material for a job.
Key concepts
1. Everyday objects that stay solid in warmth
Verbal: Stone, wood, steel spoon, plastic toy — all stay the same shape in warm weather.
Visual: A stone and an ice cube side by side in the sun.
2. Comparing melting vs non-melting things
Verbal: Ice melts easily; a stone does not melt in everyday warmth.
3. Why this matters
A steel spoon used for hot tea does not melt, so it is safe to use.
Worked example
Leaving a stone and an ice cube in the sun
Step 1 — Place a stone and an ice cube on a plate in the sun.
Step 2 — Check after 15 minutes.
Step 3 — The ice cube has become a puddle of water.
Step 4 — The stone looks exactly the same as before.
Answer: ice melts, but the stone does not melt.
Common mistakes
| Mistake | Why | Fix |
|---|---|---|
| Everything melts if left in the sun long enough | Stone, wood, and steel need far more heat than the sun gives | Compare a stone and an ice cube in the sun |
| Getting hot means melting | A metal spoon can get hot without melting | Touch a warm spoon and check it is still solid |
| Plastic always melts in warm weather | Plastic toys stay solid in everyday warmth | Leave a plastic toy in the sun and check |
Quick check
- Name one thing that does not melt in the sun.
- Does a wooden block melt on a warm table?
- Why is a steel spoon safe to use in hot tea?
- Stretch: Why do stone, wood, and steel not melt on a warm day the way ice does?
Revision tip: Compare an ice cube and a small stone on a sunny windowsill.
Open the Practice tab for graded questions on Things That Do Not Melt.
Key Takeaways (TL;DR)
- What you will learn
- Key concepts
- Worked example
- Common mistakes
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