Chemistry Practicals Class 10
Are the Crystals of Salts Really Dry?
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About Simulation
- Through this simulation, you will investigate the dryness of salt crystals using copper sulphate within a virtual environment.
- By engaging with the simulation, you can heat the crystals virtually and observe the process without the need for physical materials, offering a convenient and accessible way to conduct experiments.
- You can gain a deeper understanding of the concept of water crystallization in salt through the simulated investigation. By exploring the virtual environment, you will uncover the mechanisms behind water molecules binding to salt crystals, enriching your knowledge of crystallization processes.
- By virtually applying heat to the copper sulphate crystals, you can observe how temperature influences the release of water molecules, deepening your understanding of thermal processes in chemistry.
- By engaging in the simulated investigation, you can develop practical skills in experimental observation and data analysis.
Simulation Details
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Description
Salts are ionic compounds formed when acids and bases react with each other. These salts are found in crystal form.
Normally, salt crystals appear dry, but they contain water. When crystals of certain salts form, they combine with a specific number of water molecules, which chemically combine in a definite molecular proportion with the salt in its crystalline state. This is known as crystalline water.
A fixed or definite number of water molecules present in one formula unit of salt is called water of crystallization. A substance containing water of crystallization is called a hydrous substance (hydrate).
Examples of water of crystallization are washing soda (Na2CO3.10H2O), gypsum (CaSO4.2H2O), proteins with more than 50% water of crystallization and copper sulphate pentahydrate (CuSO4.5H2O). Hydrated Copper sulphate is represented as CuSO4.5H2O. It means 5 molecules of water are associated with each other.
Copper sulphate crystals, which seem to be dry, contain water of crystallization. When we heat the crystals, this water is removed, and the salt turns white.
If the dehydrated copper sulphate solid material is allowed to cool in the air, then it regains blue colour after gaining water molecules from the atmosphere.
Watch this video to learn more about chemistry.
Requirements for this Science Experiment
- Copper sulphate crystals
- Distilled water
- Boiling tube
- Test tube stand
- Spatula
- Bunsen burner
- Test tube holder
- Dropper
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