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test
Chemistry chapter 6 Test
| Question | Answer |
|---|---|
| In a periodic table that included electron dot diagrams, in which column would the diagrams contain more dots- Group 2 (the alkaline metals) or Group6A (the oxygen family)? | Group 6A |
| In an electron dot diagram of potassium, there is one dot. In an electron dot diagram of silicon, there are four dots. Which element would you expect to be more reactive? | Potassium because one dot is more reactive. |
| Study the electron dot diagrams in figure 6-1. Which of the elements are most likely to react and form a compound? What type of compound are they likely to form? | neon because it is the most stable element because its highest occupied energy level is filled. |
| Sodium, an alkali metal, and chlorine, a halogen, are both in Period 3 of the periodic table. Which element has a higher ionization energy? Explain your answer. | Chlorine |
| In the binary ionic compound lithium iodide, Lil, which element forms anions? | Potassium |
| Are covalent bonds more likely to be found in compounds containing both metals and nonmetals or compounds containing only nonmetals? | Only nonmetals |
| Suppose a covalent compound has a relatively high boiling point compared to molecules with a similar mass. Are the molecules in the compound likely to be polar or nonpolar? | Polar |
| The molecules in compound AB are strongly polar, while the molecules in compound XY are non-polar. Which substance probably has the higher boiling point? | AB |
| In potassium bromide, KBr, which element forms anions? | Bromine |
| In sodium chloride, NaCl, are the cations sodium ions or chloride ions? | Sodium ions |
| How do you know that magnesium is the more metallic element in the compound magnesium oxide. MgO? | Magnesium is a metal, and metals comes first. |
| The structure in a metal lattice can be described as cations surrounded bt a pool of shared electrons. What two properties of metals can be explained by this structure? | ductility and malleability |
| Why are metals good conductors of heat? | free moving atoms in metals carry both heat and electric current |
| Which material is most likley to shatter if you strike it with a hammer-sodium chloride or bronze? | Sodium Chloride |
| Mixing magnesium and aluminum together produces an excellent lightweight material from which to make airplane parts. What is this type of mixture called? | Alloy |
| Fluorine is the most reactive nonmetal. To Fluorine's immediate right in the periodic table is neon, a noble gas that does not form chemical bonds. Explain this contrast in reactivity in terms of atomic structure. | the electron configuration of an element determines its reactivity. |
| How is an electron dot diagram a useful model for focusing on the chemical properties of an element? | An electron dot diagram shows the number of valence electrons. |
| Water droplets tend to have a spherical, round shape. Explain this fact in terms of the polar nature of water molecules? | Because water molecules are polar, there are strong attractions between water molecules. |
| How does the ability of metals such as copper and alloys such as steel to be drawn into wires affect the possible uses of these materials? | If these metals can be drawn into wires, then they can be used to make long cables |
Created by:
Deja Warren
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