Vahendid
Hinnapoliitika
Loo Süžeeskeem
Minu Süžeeskeemid
Otsing
Chemistry, Changes around us
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Vaadake Seda Storyboardi Slaidiseansina!
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Koopia
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Proovige seda
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Süžeeskeem Kirjeldus
reversable and irrevarsable changes
Süžeeskeem Tekst
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.
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