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Chapter 5, Lesson 7 Multimedia

Isopropyl Alcohol

A space-filling model of an isopropyl alcohol molecule, with plus signs near one of its hydrogens and minus signs near its oxygen atom, indicating its areas of slight positive and negative charge.

The polar part of alcohol is attracted to and interacts with polar water molecules and causes alcohol to dissolve.

Mineral Oil

A space-filling model of a generic non-polar molecule, which has no areas of slight positive and negative charge.

The non-polar oil molecule does not interact with water and does not dissolve.

Glucose

A space-filling model of a glucose molecule, with plus signs near its hydrogens and minus signs near its oxygen atoms, to indicate its areas of slight positive and negative charge.

The polar parts of the glucose molecule are attracted to and interact with water and cause glucose to dissolve.