Physical Science Ch 5 Quiz
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1 point
A(n) _______ is an atom or group of atoms that has an electric charge.
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A covalent bond is called ____ if the atoms equally share one or more pairs of electrons.
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An attraction between a positive metal ion and the electrons surrounding it is a(n) _____ .
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Which of the following does NOT apply to valence electrons?
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The number of _____ remains the same from top to bottom in a group in the periodic table.
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Elements in Group 17, the halogen family, are very reactive because their atoms have ____ valence electron(s).
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A molecule in which the polar covalent bonds do not cancel out will be ____ .
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Which of the following is NOT a characteristic that results from metallic bonding?
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_____ ions are composed of more than one atom.
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In a double bond, ____ electrons are shared.
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A(n) _____ is a mixture made of two or more elements that has the properties of a metal.
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Most atoms become less reactive after a change to a total number of _____ valence electrons.  (the answer is a number)
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A neutral group of atoms joined by covalent bonds is called a(n) ________ .
1 point
In a reaction, atoms with _____ valence electrons will probably gain two electrons or share two covalent bonds. (answer is a number)
1 point
The most stable elements in the periodic table are found in the family of _______ .
1 point
Atoms in a ______ covalent bond carry slight electrical charges.
1 point
A ____ of elements shares the same number of valence electrons.
1 point
Use the electron dot diagrams to answer the following questions.
Predict the formula for the compound that would form from magnesium and chlorine.
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Predict the formula for the compound that would form from aluminum and sulfur.
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Predict the formula for the compound that would form from sodium and chlorine.
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Explain why a water molecule (H₂O) is described as polar, and a molecule of hydrogen (H₂) is described as nonpolar.
5 points
Compare and contrast ionic bonds and covalent bonds.
5 points
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