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Periodic Table - Test 5


1. The bromide ion in solution is:

    A. colorless
    B. red-orange
    C. violet
    D. yellow


2. Compared with potassium, calcium:

    A. has larger atoms
    B. has a lower density
    C. is more easily oxidized
    D. is less active chemically


3. Which of the following elements is not a noble gas?

    A. He
    B. H
    C. Ar
    D. Xe


4. Concerning the inert gases:

    A. argon is used in lifting balloons
    B. xenon is given off in the disintegration of radium
    C. neon is too rare to have any practical use
    D. krypton has eight electrons in its outermost orbit


5. The element californium, is a member of the:

    A. actinide series
    B. alkali metal family
    C. alkaline earth family
    D. lanthanide series


6. Glass:

    A. is a compound having a variable chemical formula
    B. is a mixture of salts resulting from oxides
    C. has a fixed melting point
    D. is made up of individual crystals


7. Silica:

    A. has a high coefficient of thermal expansion
    B. consists of a fibrous structure
    C. is much harder than quartz
    D. is transparent to ultraviolet light


8. Nitrogen combines directly with the more active metals to produce:

    A. nitrates
    B. nitrites
    C. hydrides
    D. nitrides


9. Which of the following is most important in predicting the chemical properties of a given element?

    A. the number of protons in the nucleus
    B. the number of neutrons in the nucleus
    C. the sum of the protons and neutrons in the nucleus
    D. the charge on its ion


10. When sodium reacts with water, one sodium atom replaces:

    A. one hydrogen atom
    B. two hydrogen atoms
    C. one oxygen atom
    D. two oxygen atoms












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