McGraw-Hill Online Learning Center Test<BLURT>

McGraw-Hill Online Learning Center Test

1. Review the animation and answer the following questions.

What is an ion?

A. An atom that is sharing an electron with another atom.
B. An atom with a different number of neutrons in its nucleus.
C. An atom that has gained or lost electrons.
D. An atom with an equal number of neutrons and protons in its nucleus.

2. An atom of calcium (Ca) has 20 electrons with 2 electrons in the inner shell, 8 in each of the next two and 2 electrons in the outer shell. When the calcium atom loses two electrons to form the calcium ion, what is its net electrical charge? A. plus 1
B. plus 2
C. minus 1
D. minus 2

3. Ionic bonds can A. only form between ions of different elements.
B. only form between ions of the same element.
C. form between either ions of different elements or ions of the same element.
D. bring together ions of the same electrical charge.

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