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Unit on Atoms

Unit on Atoms. Pretest. How many known elements are there on Earth and in the universe?. A. Billions B. 1,290 C. 110 D. 92. The chemical symbol for iron is:. A. Ir B. Sn C. Pb D. Fe. Who is the father of the periodic table?. Charles Darwin Dmitri Mendeleev

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Unit on Atoms

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  1. Unit on Atoms Pretest

  2. How many known elements are there on Earth and in the universe? • A. Billions • B. 1,290 • C. 110 • D. 92

  3. The chemical symbol for iron is: • A. Ir • B. Sn • C. Pb • D. Fe

  4. Who is the father of the periodic table? • Charles Darwin • Dmitri Mendeleev • Antony van Leewenhoek • Gregor Mendel

  5. The horizontal rows on the periodic table are called: • A: Periods • B: Groups • C: Columns • D: Metals

  6. The vertical rows on the periodic table are called: • A. Periods • B. Groups • C. Columns • D. Metals

  7. What is true about alkali metals? • A. They are soft and can be cut with a butter knife • B. They are used in the making of jewelry • C. They are in group 15 • D, They contain elements used in computers

  8. What is true about transition metals? • A. They transition from one state of matter to another • B. They are elements in groups 3-12 • C. There are very few transition metals • D. Transition metals are a significant part of our body composition.

  9. Which of the following is not an element? • A. Oxygen • B. Water • C. Iron • D. Lead

  10. Atomic mass equals the number of: • A. Protons and electrons • B. Protons and neutrons • C. Neutrons • D. Neutrons and electrons

  11. How many electrons can fit in the innermost orbit around the neucleus? • A. 2 • B. 3 • C. 4 • D. 5

  12. How many elements have been made by scientists in the lab? • A. Zero • B. 16 • C. 20 • D. 5

  13. If you could weigh the elements in your body, you would find it ismostly: • A: Hydrogen • B: Carbon • C: Nitrogen • D: Oxygen

  14. What element makes up ¾ of the Earth’s atomosphere? • A. Nitrogen • B. Oxygen • C. Carbon • D. Boron

  15. What is not true about noble gases? • A. They are in group 18 • B. They are very unreactive • C. They are used in neon signs • D. They are in group 1

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