Padaarthon ke Gun

Class 6 Science · Chapter 6: Hamare Aas-paas ke Padaarth · NCERT Curiosity section 6.3

Seekho

Roop: kuch padaarth chamakte hain (lustrous), jaise sona, chaandi aur naya steel ka chammach. Lakdi, kapda aur kaagaz nahi chamakte. Dhundhli dhaatu sandpaper se ghiskar phir chamakdaar ho sakti hai.

Sakht ya naram: jo padaarth khurachna ya dabaana mushkil ho, jaise loha ya patthar, wo sakht hai. Jo aasaani se dab ya khurach jaaye, jaise rui, sponge ya makkhan, wo naram hai.

Roshni: jinke aar-paar saaf dikhe wo transparent (saaf kaanch, saaf paani). Jo thodi dhundhli roshni jaane dein wo translucent (butter paper, ghisa kaanch). Jo bilkul roshni na jaane dein wo opaque (lakdi, dhaatu, gatta).

Paani mein: cheeni aur namak ghulte hain (soluble); ret, chalk aur tel nahi (insoluble). Kuch cheezein tairti hain (lakdi, cork, plastic gend), kuch doobti hain (patthar, lohe ki keel, sikka).

Explore: padaarth khud test karo.

1. Torch daalkar har cheez group karo.
2. Ab har ek paani mein hilaao.

Yaad rakho

• Gunon mein chamak, sakhti, roshni ka jaana (transparent, translucent, opaque), ghulna aur tairna hain.
• Andaaza nahi, test: har gun aasaan activity se jaancho.

Quick check

Butter paper thodi roshni jaane deta hai par aar-paar saaf nahi dikhta. Ye hai …

1. translucent
2. transparent
3. opaque
4. lustrous

Socho

Aisa pencil box jisme andar ki pencils dikhein par aasaani se na toote, kis padaarth ka banaoge? Kyun?

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.