4.2.4.1 - High Melting Points
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Practice Questions
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What defines the melting point of a substance?
💡 Hint: Think about the thermal energy involved in this transition.
Which compounds typically have higher melting points: ionic or covalent?
💡 Hint: Consider the forces holding the substances together.
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Interactive Quizzes
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What causes the high melting points of ionic compounds?
💡 Hint: Think about what forces are at work in ionic bonds.
True or False: Ionic compounds typically exist as liquids at room temperature.
💡 Hint: Consider the state of ionic compounds under normal conditions.
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Challenge Problems
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Compare and contrast the melting points of magnesium oxide (MgO) and sodium chloride (NaCl), explaining the reasons for the differences.
💡 Hint: Consider both the charge and size of the ions involved.
What might you predict about the melting point of an ionic compound formed from a group 1 metal and a group 17 non-metal compared to one formed from a group 2 metal and group 16 non-metal?
💡 Hint: Think about how charge differences can impact strength and melting behavior.
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