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Questions and Answers
What characterizes a sharp melting point?
What characterizes a sharp melting point?
Which type of melting point is indicative of an impure compound?
Which type of melting point is indicative of an impure compound?
What happens during the determination of melting points for some compounds?
What happens during the determination of melting points for some compounds?
Why is a small temperature difference between the beginning and end of melting important?
Why is a small temperature difference between the beginning and end of melting important?
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What would be true about a substance with a broad melting point?
What would be true about a substance with a broad melting point?
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Study Notes
Melting Point Types
- Melting point isn't a single reading; it's a range. The range starts from the first drop of liquid until the substance is completely liquid.
Sharp (Definite) Melting Point
- Indicates a pure compound
- Temperature difference between the start and end of melting is less than 2 degrees.
Broad (Indefinite) Melting Point
- Indicates an impure compound
- Temperature difference between the start and end of melting is greater than 2 degrees.
- Impurities cause the substance to decompose during the determination process. The decomposition products act as impurities.
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Description
Test your knowledge on the different types of melting points in chemistry. Learn about sharp and broad melting points and how they indicate the purity of a compound. This quiz will help reinforce your understanding of the melting point concept.
