Explain the simple process of crystallization with given example of copper sulphate
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Crystals
A crystal is a chunk of a material in the Solid Form. It is the typically the purest form of the material. At the microscopic level, crystals have a regular pattern. This means that the atoms and molecules in the crystals follow a particular repeating structure.
Examples in Nature
Crystallisation
Objects ranging from the rarest precious diamonds all the way to grains of salt are crystals. The beautiful phenomena of snowflakes occur as a result of Crystallisation. You would also find this process occurring in the remoteness of a cave. It leads to the formation of Stalactites and Stalagmites.
Crystallisation Process
Crystallisation process results in a physical change in objects. It leads to the formation of crystal structures. Clear distinguish between processes of crystallisation is not possible. But we can identify two categories of crystallisation processes namely Cooling Crystallisation and Evaporative Crystallisation.
Cooling Crystallisation
Many substances, when dissolved in solvent, form crystals on cooling in favorable conditions in this process. However, this method is not very common and has many limitations. Usually, the substance is heated and then allowed to cool down in this method.
Evaporative Crystallisation
It is more common than cooling crystallisation. Evaporating sea water leaves salt behind. Pure Crystals of Substance are deposited after evaporation of solutions. But this method requires a high concentration of the substance in the solution. Therefore, its solute/solvent mass ratio should be high.
Simple Experiments to Demonstrate Crystallisation
Experiment 1
First of all, take some water in a beaker. Add a few drops of dilute Sulphuric Acid (H2SO4).
Heat the mixture on a burner. Add Copper Sulphate Powder when it starts boiling.
Keep stirring the solution. Keep adding Copper Sulphate Powder to the solution until it is soluble.
Now filter the solution and allow it to cool down.
You will see crystals of copper sulphate suspended in the solution.
A crystal is a chunk of a material in the Solid Form. It is the typically the purest form of the material. At the microscopic level, crystals have a regular pattern. This means that the atoms and molecules in the crystals follow a particular repeating structure.
Examples in Nature
Crystallisation
Objects ranging from the rarest precious diamonds all the way to grains of salt are crystals. The beautiful phenomena of snowflakes occur as a result of Crystallisation. You would also find this process occurring in the remoteness of a cave. It leads to the formation of Stalactites and Stalagmites.
Crystallisation Process
Crystallisation process results in a physical change in objects. It leads to the formation of crystal structures. Clear distinguish between processes of crystallisation is not possible. But we can identify two categories of crystallisation processes namely Cooling Crystallisation and Evaporative Crystallisation.
Cooling Crystallisation
Many substances, when dissolved in solvent, form crystals on cooling in favorable conditions in this process. However, this method is not very common and has many limitations. Usually, the substance is heated and then allowed to cool down in this method.
Evaporative Crystallisation
It is more common than cooling crystallisation. Evaporating sea water leaves salt behind. Pure Crystals of Substance are deposited after evaporation of solutions. But this method requires a high concentration of the substance in the solution. Therefore, its solute/solvent mass ratio should be high.
Simple Experiments to Demonstrate Crystallisation
Experiment 1
First of all, take some water in a beaker. Add a few drops of dilute Sulphuric Acid (H2SO4).
Heat the mixture on a burner. Add Copper Sulphate Powder when it starts boiling.
Keep stirring the solution. Keep adding Copper Sulphate Powder to the solution until it is soluble.
Now filter the solution and allow it to cool down.
You will see crystals of copper sulphate suspended in the solution.
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