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How does increasing chain length alter the melting and boiling temperatures?

For a substance to melt or boil, heat energy must be supplied. This is to overcome Van der Waals forces. As the length of a chain increases, there are more Van der Waals forces present due to the chain getti...
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Answered by Rhea S. • Chemistry tutor
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What is ionic bonding?

Ionic bonding occurs between positive and negatively charged ions. A simple example is Sodium Chloride. Sodium has 1 outer shell electron which it wants to lose in order to create a stable electronic configu...
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What is the general rule for the molecular formula for alkanes? Therefore what is the formula for an alkane with 7 carbons, and what is it called?

C n H 2n+2 C 7 H 16 Heptane
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Answered by Kd B. • Chemistry tutor
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Describe and Explain the trend in Volatility of Group 7 Elements

The group 7 elements become less volatile as you go down the group. This is because as you go down the group the molecules become larger and contain more electrons. Therefore there are Greater London forces ...
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Answered by Ruby O. • Chemistry tutor
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Why does butane have a higher boiling point than ethane?

GCSE answer: Butane is a larger molecule than ethane meaning that the intermolecular forces between its molecules are stronger. In order for a compound to boil these intermolecular forces need to be overcome...
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Answered by Lucy B. • Chemistry tutor
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