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By which process can you separate a mixture of naphthalene and chalk powder?
Sublimation can be used to separate naphthalene from chalk powder. Naphthalene sublimes at room temperature, while chalk powder does not, allowing for the separation based on this difference in physical properties.
Why is naphthalene a pure substance?
Naphthalene is considered a pure substance because it is a chemical compound made up of only naphthalene molecules. It has a definite and consistent chemical composition, with uniform properties throughout its structure.
Is naphthalene magnetic?
No, naphthalene is not magnetic because it does not contain any unpaired electrons or magnetic properties that would make it attract to a magnetic field.
Is resonance possible in naphthalene?
Yes, resonance is possible in naphthalene. The pi-electrons in the benzene rings of naphthalene can delocalize and spread out across the rings, leading to resonance stabilization. This resonance contributes to the stability and unique chemical properties of naphthalene.
How would you describe the naphthalene in the after pounding?
After pounding, naphthalene appears as a fine, white to off-white powder. Its distinct aromatic odor becomes more pronounced, and the crystalline structure may be less visible due to the crushing process. The texture is gritty, and it may clump slightly if moisture is present. Overall, the physical properties change, but it retains its characteristic chemical identity.
By which process can you separate a mixture of naphthalene and chalk powder?
Sublimation can be used to separate naphthalene from chalk powder. Naphthalene sublimes at room temperature, while chalk powder does not, allowing for the separation based on this difference in physical properties.
What happens to sulphur when it is added to naphthalene?
When sulfur is added to naphthalene, it can form a chemical compound known as sulfurized naphthalene. This can improve the lubricity and anti-wear properties of the naphthalene, making it suitable for use as a lubricant or as an additive in lubricating oils.
Is naphthalene a base?
No, naphthalene is not a base. It is a white solid aromatic hydrocarbon compound that is widely used in mothballs and as a cleaning agent. It is not classified as a base in terms of its chemical properties.
Why is naphthalene a pure substance?
Naphthalene is considered a pure substance because it is a chemical compound made up of only naphthalene molecules. It has a definite and consistent chemical composition, with uniform properties throughout its structure.
Is naphthalene magnetic?
No, naphthalene is not magnetic because it does not contain any unpaired electrons or magnetic properties that would make it attract to a magnetic field.
Can iodine and naphthalene be separated by sublimation?
Yes, iodine and naphthalene can be separated by sublimation because they have different sublimation points. Iodine sublimes at a lower temperature compared to naphthalene, allowing for the selective separation of the two substances based on their sublimation properties.
Is resonance possible in naphthalene?
Yes, resonance is possible in naphthalene. The pi-electrons in the benzene rings of naphthalene can delocalize and spread out across the rings, leading to resonance stabilization. This resonance contributes to the stability and unique chemical properties of naphthalene.
Which physical method can be used to separate naphthalene from sand?
Sublimation can be used to separate naphthalene from sand. Naphthalene can be heated to change it directly from a solid to a gas, leaving the sand behind. The gas can then be collected and cooled to form solid naphthalene again.
Will naphthalene conduct electricity when molten?
No, naphthalene will not conduct electricity when molten because it is a covalent compound with non-metallic properties, meaning it does not contain free-moving ions or electrons needed for conduction.
Properties that describe the appearance of matter are known as?
physical
How would you describe the naphthalene in the after pounding?
After pounding, naphthalene appears as a fine, white to off-white powder. Its distinct aromatic odor becomes more pronounced, and the crystalline structure may be less visible due to the crushing process. The texture is gritty, and it may clump slightly if moisture is present. Overall, the physical properties change, but it retains its characteristic chemical identity.
How you detect naphthalene if you cannot see it?
Naphthalene can be detected using gas chromatography or mass spectrometry techniques that can separate and analyze the compound's chemical properties and structure even if it's not visible. These methods can identify the presence of naphthalene by measuring its unique molecular characteristics. Additionally, specialized odor detection equipment can also be used to detect the distinctive smell of naphthalene that is often present even if it is not visible.
