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Write the observations for the following...

Write the observations for the following: Heating the crystals of pure sodium chloride.

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### Step-by-Step Text Solution: 1. **Heating Sodium Chloride Crystals**: When pure sodium chloride (NaCl) crystals are subjected to heat, they undergo a physical change due to the increase in temperature. 2. **Breaking Down of Crystals**: As the temperature rises, the sodium chloride crystals begin to break down into smaller fragments. This process is a result of thermal stress on the crystal structure. 3. **Observation of Cracking Sound**: During the heating process, a distinct cracking sound is produced. This phenomenon is known as "decrepitation." The sound occurs because the larger crystals are breaking apart. ...
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