Question

A water molecule is composed of a large oxygen atom bonded to two small hydrogen atoms. Which of the following would make the best model of a water molecule?
A. A drawstring bag filled with blue, green, red, and yellow marbles
B. Four index cards printed with either an uppercase or lowercase letter
C. Two small, plastic balls attached to a larger plastic ball by toothpicks
D. A large, plastic bucket filled with dirt, dead leaves, and rocks

Answer 1

The best and most correct answer among the choices provided by your question is the third choice or letter C.

The best model of a water molecule would be: Two small, plastic balls attached to a larger plastic ball by toothpicks

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Answer 2

Answer:

C. Two small, plastic balls attached to a larger plastic ball by toothpicks

Explanation:

One molecule of water has 1 oxygen atom and two atoms of hydrogen. Each hydrogen is attached to the oxygen by a simple bond, they share one pair of electron.

Because oxygen is larger than hydrogen, a manner to represent a single molecule is to have two small plastic balls (representing hydrogen) attached to a larger plastic ball (representing oxygen) by toothpicks (representing the bonds), such as the image below.