CHEMISTRY I: ATOMS AND MOLECULES

Question 1 of 20

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Energy is the capacity to do work

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  • False

Question 2 of 20

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The neutron also is located in the atomic nucleus

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  • True
  • False

Question 3 of 20

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The neutron has no charge, and a mass of slightly over 1 amu

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  • True
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Question 4 of 20

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The electron is a very small particle located in the nucleus.

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  • True
  • False

Question 5 of 20

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The atomic number is the number of protons and neutrons an atom has

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  • True
  • False

Question 6 of 20

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Isotopes are also the source of radiation used in medical diagnostic and treatment procedures.

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  • True
  • False

Question 7 of 20

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Carbon has three isotopes, of which carbon-12 and carbon-14 are the most well known

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  • True
  • False

Question 8 of 20

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Molecules are the smallest particle into which an element can be divided.

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  • True
  • False

Question 9 of 20

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An orbital is also an area of space in which an electron will be found 10% of the time.

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  • True
  • False

Question 10 of 20

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The major energy levels into which electrons fit, are (from the nucleus outward) K, L, M, and N. Sometimes these are numbered, with electron configurations being: 1s22s22p1, (where the first shell K is indicated with the number 1, the second shell L with the number 2, etc.).

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  • True
  • False

Question 11 of 20

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Ionic bonds are destroyed when atoms become ions by gaining or losing electrons

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  • True
  • False

Question 12 of 20

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Covalent bonds form when atoms share electrons.

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  • True
  • False

Question 13 of 20

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Formation of covalent bonds in methane. Carbon needs to share five electrons, in effect it has four slots. Each hydrogen provides an electron to each of these slots.

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  • True
  • False

Question 14 of 20

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The molecule methane (chemical formula CH4) has four covalent bonds, one between Carbon and each of the four Hydrogens

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  • True
  • False

Question 15 of 20

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Chemical reactions don't occur in nature, and some also can be performed in a laboratory setting.

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  • True
  • False

Question 16 of 20

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The water molecule is thus polar, having positive and negative sides

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  • True
  • False

Question 17 of 20

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Formation of a crystal of sodium chloride: Each positively charged sodium ion is surropunded by seven negatively charged chloride ions;

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  • True
  • False

Question 18 of 20

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Orbitals have a variety of shapes

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  • True
  • False

Question 19 of 20

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Atoms of an element that have differing numbers of neutrons (but a constant atomic number) are termed ions

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  • True
  • False

Question 20 of 20

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Elements are substances consisting of one type of molecule

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  • True
  • False
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CHEMISTRY I: ATOMS AND MOLECULES

anabelen
Quiz by , created over 2 years ago

Quiz on CHEMISTRY I: ATOMS AND MOLECULES, created by anabelen on 20/05/2014.

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Created by anabelen over 2 years ago
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