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What is the chemical content of snow?
Snow is solid water - H2O; of course snow contain many impurities.
Is liquid water a pure substance?
Yes, water (as a liquid, solid or gas) can be obtained as a pure substance; but frequently water contain many impurities.
What happen to the melting point of solid if impurities are added in it?
When impurities are added to a solid, the melting point typically decreases and the melting range broadens. This phenomenon occurs because impurities disrupt the orderly structure of the solid, making it easier for the solid to transition into the liquid phase. As a result, the presence of impurities can lower the energy required for melting.
How do you remove impurities from caustic soda solution in water?
Impurities in caustic soda solution can be removed by various methods such as filtration, precipitation, or ion exchange. Filtration can remove solid impurities, while precipitation involves adding a chemical to react with impurities and form a solid that can be filtered out. Ion exchange can remove impurities by exchanging them with ions in a resin.
Why do impurities in a solid increase the boiling point?
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What happens to impurities during sublimation?
During sublimation, impurities typically remain in the solid phase while the target substance transitions directly from solid to gas. As the pure substance sublimates, it leaves the impurities behind, which can be collected and discarded. This process results in a purer form of the substance, as impurities do not vaporize and are thus separated from the desired material.
How is distillation used to make alcohol pure?
Alcohol has a lower boiling point than water, so it can be condensed separately out of an aqueous solution. When it evaporates, alcohol is removed directly from solutions that contain solid impurities.
Why does distilled water not have any solid in it?
Distillation means evaporation of liquid leaving solid particles and condensation in another container so distilled water has no solid impurities.
Can rainwater dissolve solid bedrock?
Yes, over long periods of time, rainwater can dissolve solid bedrock through a process called chemical weathering. Rainwater is slightly acidic due to carbon dioxide in the atmosphere, which can react with minerals in the bedrock, gradually breaking it down. This process is slow and usually takes thousands to millions of years to significantly change the bedrock.
What is used to remove solid impurities from the water supply?
Water treatment processes such as filtration and sedimentation are used to remove solid impurities from the water supply. These methods help to separate particles and debris from the water, improving its quality and safety for consumption.
Is rainwater considered a mineral?
No, rainwater is not considered a mineral because it does not meet the criteria to be classified as a mineral, which typically includes being a naturally occurring inorganic solid with a specific chemical composition and crystalline structure.
Why is filtrate pure?
Filtrate is considered pure because it is a liquid that has been separated from insoluble solid particles through the process of filtration. Filtration allows for the removal of solid impurities, leaving behind a relatively clear and particle-free liquid. However, it is worth noting that while filtrate is generally pure in terms of solids, it may still contain dissolved impurities or contaminants that are present in the original solution.
