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If you were using a box of Legos to explain matter to a child, what would be the best way to symbolize the meaning of the word element?

Which of the following would you expect to be the most chemically similar to calcium (Ca)?

Which of the following is 8.9×10-3 in standard notation?

In the following generic atomic symbol, what does the number 14 represent?

Choose the symbol for the alkaline earth metal found in period 5.

If two objects are the same size, but one sinks in water and one floats, which of the following statements is TRUE about the two objects?

How many protons and electrons are in an ion of suflur: S2- ?

How big would an atom have to be to have the nucleus be the size of a marble?

Which of the following would you expect to be the most chemically similar to Lithium (Li)?

Which of the following is a chemical property of mercury?