Quiz 2
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MULTIPLE CHOICE QUESTIONS
Protons, Neutrons, and Electrons
1. Atoms with the same atomic number but different mass numbers are called:
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2. The part of the atom that has a negative charge is referred to as the
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3. The mass number of an atom is
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Isotopes (Watching this video is optional)
4. One atom of a hypothetical element X has 27 neutrons while another has 29. This would make the two atoms of the element
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5. What type of weak bond results from asymmetry in the charge distribution?
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6. What type of bond forms the strongest chemical bonds and compounds that tend to be strong with great hardness?
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Refer to this graph for questions 7 and 8.
7.  In the illustration above, the part of the atom that has a negative charge is referred to as the
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8.  In the illustration above, the part of the atom that has a positive charge is referred to as the
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9. The property of a mineral that relates how heavy it is for its size is referred to as
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10. Which element is the most abundant in Earth's crust?
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11. Which type of rocks have been altered by heat and pressure so that a new mineral assemblage and rock fabric has developed?
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12.  Granite and basalt are what type of rocks?
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13.  Which type of rocks are held together by naturally forming cement?
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FILL IN THE BLANK - use only lower case and no spaces
14. An atom that has an excess positive or negative electrical charge caused by the loss or addition of an electron is called a(n) ______.
15. Most of the mass number of an atom is the sum of the protons and ______.
16. The four types of bonding that are important in minerals are ______, covalent, metallic, Van der Waals.
17. The property of ______ is a mineral's resistance to scratching.
18. Some minerals break along specific directions of weakness in their crystal structures. This property of a mineral to break in this predictable way is referred to as______.
19. The _____ of a mineral is the color of the mineral when powdered, which is usually accomplished in soft minerals by rubbing the sample against an unglazed porcelain plate.
20. _____ and silicon are the two most common elements in Earth's crust.
21. The two most abundant mineral families of Earth's crust are the silicates and the _____.
22. Based on their origins, rocks can be divided into three distinct families: _______, sedimentary and metamorphic.
CHECK THE APPROPRIATE BOX
23.  There are 6 protons in the nucleus of a carbon atom.  How many neutrons are there in carbon 12, carbon 13, and carbon 14, respectively?
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24. Weak bond that is easily broken. One side of a “neutral” molecule is slightly positive and the other side slightly negative (assymetrical charge distribution).
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25. Charging of atoms positively or negatively so that they would attract. This bond creates minerals with an intermediate hardness.
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26. Clouds of electrons are shared by atoms making minerals malleable and good conductors  of electricity.
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27. “Sharing” of electrons. This bond creates minerals that are hard.
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28. What are the four requirements necessary to classify a solid material as a mineral?
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29. Why is color an unreliable way to identify a mineral?
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30. Two chemical elements make up 70 percent of Earth's crust by weight.  What are the two elements?
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31. What's the difference between a rock and a mineral?
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32. What are the three families of rocks?
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33. The figure below illustrates bonding forming crystal structures of carbon.  Indicate why are both minerals completely different.
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34. What holds rocks together?
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TRUE OR FALSE
35. Metamorphic rocks – Rocks that have been altered by exposure to high temperature, high pressure, or both
36. Igneous rocks – Rocks that form under conditions of low pressure and low temperature near the surface.
37. Sedimentary rocks – Rocks that form by cooling and solidification of molten rock
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