The term is "anhydrous", which refers to a substance that has had all of its water removed through heating.
When FeSO4·7H2O is heated strongly, it loses its water molecules and forms anhydrous FeSO4. The color changes from blue to white or pale green due to the removal of water molecules, and the compound becomes anhydrous iron(II) sulfate (FeSO4).
when zinc carbonate is heated it' white colour changes to yellow . And when it is cooled it again changes to it original colour
When salt is heated, the moisture inside it evaporates quickly, causing the salt to crack and pop. This happens because the rapid release of steam generates pressure within the salt crystals, leading to the popping sound.
Eventually if heated long enough (and hot enough) all the water would either eat the world or MELT (turning into steam), leaving behind nothing but solid salt behind. This is one way that you can remove salt from sea water in fact.
a browny green colour
The term is "anhydrous", which refers to a substance that has had all of its water removed through heating.
It loses its charged.
hydrate
no
It loses its water content and becomes brown.
The decomposition equation for Epsom salt (magnesium sulfate heptahydrate) is: MgSO4·7H2O -> MgSO4 + 7H2O. When heated, Epsom salt loses its water molecules, leaving behind anhydrous magnesium sulfate.
Yes it is true
Sulfur heated in oxygen produces a blue flame.
When FeSO4·7H2O is heated strongly, it loses its water molecules and forms anhydrous FeSO4. The color changes from blue to white or pale green due to the removal of water molecules, and the compound becomes anhydrous iron(II) sulfate (FeSO4).
lead oxide
It turns greenish.