Ionic Compounds Worksheet (Chapter 8) – Flashcards
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The force that holds two atoms together is called a(n)
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Chemical bond.
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Such an attachment may form by the attraction of the positively charged __ of one atom for the negatively charged ___ of another atom, or by the attraction of charged atoms which are called ___.
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nucleus ; electron ; ions
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The attractions may also involve ___ electrons, which are the electrons in the outermost ___.
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Valence ; Energy level.
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The ___ ___ are a family of elements that have very little tendency to react.
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Noble gases
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Most of these elements have a set of eight outermost electrons, which is called a stable
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Octet
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The relatively stable electron structures developed by loss of electrons in certain elements of groups 1B, 2B, 3A, and 4A are called
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pseudo-noble gas formations
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A positively charged ion is called an anion.
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False
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Elements in group 1A lose their one valence electron, forming and ion with a 1+ charge.
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True
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Elements tend to react so that they acquire the electron structure of a halogen.
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False
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A sodium atom tends to lose one electron when it reacts
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True
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The electron structure of a zinc ion (Zn 2+) is an example of a pseudo-noble gas formation.
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True
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A Cl- ion is an example of a cation.
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False
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The ending -ide is used to designate an anion.
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True
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Nonmetals form a stable outer electron configuration by losing electrons and becoming anions.
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False
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An ionic bond is
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A force that holds together atoms that are oppositely charged.
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The formula unit of an ionic compound shows the
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Simplest ratio of the ions.
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The overall charge of a formula unit for an ionic compound is
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always zero
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How many CL- ions are present in a formula unit of MgCl-ide, given that the charge on a MG ion is 2+
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two
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Ionic bonds generally occur between
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A metal and a nonmetal
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Salts are examples of
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Ionic compounds
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A 3 dimensional arrangement of particles in an ionic solid is called a(n)
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Crystal lattice.
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In a crystal lattice of an ionic compound,
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Ions are surrounded by ions of the opposite charge.
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What is the relationship between lattice energy and the strength of the attractive force holding ions in place?
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The more negative the lattice energy is, the greater the force.
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The formation of a stable ionic compounds from ions
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is always exothermic
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In electron transfer involving a metallic atom and a nonmetallic atom during the ion formation, which of the following is correct?
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The nonmetallic atom gains electrons from the metallic atom.
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Melting point in ionic compounds
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High
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Boiling point in ionic compounds
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high
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Hardness in ionic compounds
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hard
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Brittleness in ionic compounds
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Brittle
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Electrical conductivity in the solid state
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Poor
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Electrical conductivity in the liquid state
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Good
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Electrical conductivity when dissolved in water
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good
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The crystal lattice of ionic compounds affects their melting point and boiling point.
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True
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The lattice energy is the energy required to separate the ions of an ionic compounds.
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true
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The energy of an ionic compounds is higher than that of the separate elements that formed it.
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False
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Large ions tend to produce a more negative value for lattice energy than smaller ions do.
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False
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Ions that have larger charges tend to produce a more negative lattice energy than ions with smaller charges do.
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True
