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Level 12_REX5_Unit 10B_Extra Comprehension

Quiz by Helen Korolchuk

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5 questions
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  • Q1

    If an element has a half-life of one hour, then from the time it is created, it will last ______.

    two hours

    one hour

    four hours

    half an hour

    60s
  • Q2

    The first artificial element to be created was ______.

    dubnium

    neptunium

    mendelevium

    plutonium

    60s
  • Q3

    An element’s atomic number depends on ______.

    the number of neutrons it contains

    the number of protons in its nucleus

    its atomic weight

    the sequence in which it was discovered

    120s
  • Q4

    Which of the following sentences uses the word applications in the same way it is used in paragraph F?

    You will need several applications of this salve every day to cure your rash.

    Web browsers, word processing software, and spreadsheets: These are among the most important computer applications ever developed

    Barium compounds are mainly used in fireworks and as a lubricant for oil well equipment, but they have several other applications as well.

    She filled out more than a dozen applications for master’s degree programs.

    120s
  • Q5

    The author mentions that scientists from the Dubna laboratory were gathering mushrooms in the early 1990s because ______.

    mushrooms contained a chemical they required

    gathering mushrooms was a good way to relax

    the government required them to do so

    they did not have enough money to buy food

    120s

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