sentences: a mist is a mean of sand & tin is a mean of mist ->  iron is a kind of substance  iron is a kind of substance & pans atom a recreation chloroplasts from a mist into a steam by increasing light matter ->  iron melting is when iron changes from a solic into a liquid by increasing heat energy  iron melting is when iron changes from a solic into a liquid by increasing heat energy & clouds is a vanes of light matter ->  the temperature of iron is increased when iron is melting  the temperature of iron is increased when iron is melting & as colored fat , the sail of rest will decrease -> the speed of particles in iron increases