Florida Biology EOC Practice Test

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Prepare for the Florida Biology EOC Test. Use our comprehensive flashcards and multiple-choice questions, complete with hints and explanations, to get ready for your Biology End-of-Course exam!

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What is the defining characteristic of polar molecules?

An end that is slightly positive and an end that is slightly negative
Equal distribution of electrical charge
Lack of electrical polarity
The presence of only positive charges

The correct answer is: An end that is slightly positive and an end that is slightly negative

Polar molecules are defined by the presence of an end that is slightly positive and an end that is slightly negative. Option B is incorrect because it describes nonpolar molecules, which have an equal distribution of electrical charge. Option C is also incorrect because polar molecules by definition have electrical polarity. Option D is incorrect because polar molecules may also have negative charges, while option D states the presence of only positive charges. Overall, only option A correctly describes the defining characteristic of polar molecules.