Chemistry, Changes around us
القصة المصورة الوصف
reversable and irrevarsable changes
نص القصة المصورة
- Oh no!We had to use this iron for costruction, but it has started to rust
- And it is an irrevesible change.
- This shovel is very handy for soil digging, we need more of them. Do you know how it is made?
- Yes, I do. The iron blade is fixed to the wooden handle by the proccess of expansion on heating , it is a reversible change
- Uh oh!No electricity, we'll have to manage with candles
- Do you know, melting of wax is reversible change and burning of wax is an irreversible change.
تم إنشاء أكثر من 30 مليون من القصص المصورة