Chemical Bonding Review
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1 Chemical Bonding Review Objective Review unit three s topics in order to gauge which topics you should review most for your assessment next class. Homework Test next class School ID s SAT Prep Question Of the Christmas tree smelling chemicals presented, what pattern do you notice between them that might be responsible for the tree smell?
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3 Of the Christmas tree smelling chemicals presented, what pattern do you notice between them that might be responsible for the tree smell?
4 Chemical Bonding Review Objective Review unit three s topics in order to gauge which topics you should review most for your assessment next class. Homework Test next class School ID s SAT Prep Question Of the Christmas tree smelling chemicals presented, what pattern do you notice between them that might be responsible for the tree smell?
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6 Bonding Properties Bonding Type Identification Lewis Dot Structures Molecular Shapes Polarity, Electronegativity, Intermolecular Forces Hodgepodge
7 What determines the chemical properties of an element? A. atomic number B. number of electron shells C. number of valence electrons D. physical state at room temperature
8 Four different solids were tested for conductivity. Each solid was then placed in a crucible and heated until it melted. The melting point and conductivity for each melted sample were measured? Which solid displays the properties of an ionic compound? A. Solid A B. Solid B C. Solid C D. Solid D
9 Which of the follow is a property of a metallic bond? A. Malleable B. Gas at room temperature C. Doesn t conduct D. Dissolves in water
10 Which of the following is a property of an ionic bond? A. Conducts as a solid B. Consists of metal and nonmetal atoms C. Doesn t dissolve in water D. Liquid at room temperature
11 Which of the following is a property of a network covalent bond? A. Consists of metal and nonmetal atoms B. Dissolves in water C. Conducts when dissolved D. Very hard solid
12 What type of bond forms between potassium and bromine? A. hydrogen B. ionic C. nonpolar covalent D. polar covalent
13 What type of bond forms between oxygen and fluorine? A. covalent B. hydrogen C. ionic D. metallic
14 What type of bond forms as the result of electron sharing? A. covalent B. intermolecular C. ionic D. metallic
15 What type of bond forms as the result of electron taking? A. covalent B. intermolecular C. ionic D. metallic
16 Elements form chemical bonds because their atoms have. A. too many electrons B. more protons than electrons C. complete inner electron shells D. incomplete outer electron shells
17 Which is the correct Lewis dot structure for the oxygen atom? A. A B. A C. A D. z O O O O
18 Which is the correct Lewis dot structure for hydrogen chloride (HCl)? A. A B. T C. X D. Z Cl Cl Cl Cl
19 How many single covalent bonds are in a molecule of methane, CH 4? A. 1 B. 2 C. 3 D. 4
20 How many single covalent bonds are in a molecule of phosphorus trichloride, PCl 3? A. 1 B. 2 C. 3 D. 4
21 How many electrons are shared in the double bond between the two oxygen atoms? A. 8 B. 4 C. 2 D. 1
22 How many nonbonding domains are there in the hypothetical molecule (XY 3 )? A. 1 B. 2 C. 3 D. 4
23 According to VSEPR Theory, which of these determines the shape of a molecule? A. number of atoms in the molecule B. number of polar covalent bonds C. number of valence electrons around the central atom D. number of bonding and nonbonding electron pairs
24 What is the predicted shape of a molecules of XY 3? A. trigonal planar B. tetrahedral C. pyramidal D. bent
25 Which of these diagrams is consistent with the predicted shape of a molecules of H 2 S? A. 90 A. 107 A. 120 A. 180
26 What is the bond angle between the terminal atoms? A. 90 B. 107 C. 120 D. 180
27 Which of the following pairs of atoms forms the most polar bond? A. H, Si B. H, Cl C. H, H D. H, S
28 Which diagram accurately shows the hydrogen bonding that occurs between two water molecules? A. Negative B. No charge C. Positive
29 Which of these attractions is the weakest? A. covalent bond B. hydrogen bond C. ionic bond D. Van der Waals forces
30 The Lewis dot structures of methane (CH 4 ) and methyl chloride (CH 3 Cl) are given below. Which of these statements describing the polarity of the molecules is true? A. CH 4 is a polar molecule, CH 3 Cl is a nonpolar molecule B. CH 4 is a nonpolar molecule, CH 3 Cl is a polar molecule C. CH 4 and CH 3 Cl are both nonpolar molecules D. CH 4 and CH 3 Cl are both polar molecules
31 Which of these is a nonpolar molecule containing polar bonds? A. ) A. ) A. ) A. s
32 What is the molecular formula of the compound shown below? A. C 5 H 8 O B. C 5 H 8 O 2 C. C 4 H 8 O D. C 5 H 10 O
33 If the electronegativity difference between two atoms is extremely large, what type of bond will they form? A. ionic B. polar covalent C. nonpolar covalent D. nonpolar ionic
34 Based on the position of the elements on the periodic table, which of these compounds should have chemical bonds that are the most polar? A. LiCl B. KCl C. MgCl 2 D. BaCl 2
35 Arsenic has 5 valence electrons. Predict the shape of a molecule of AsH 3? A. trigonal planar B. pyramidal C. tetrahedral D. bent
36 What type of molecular representation is shown below? A. Lewis dot diagram B. Structural formula C. Molecular formula D. Ball-and-stick model
37 Lewis Dot Structures & Polarity
38 A student from Chef B s class spills cooking oil on her new shirt. She knows from chemistry class that an oil molecule is nonpolar. She knows a nonpolar liquid solvent is needed to remove the stain. The liquids available in the classroom are carbon tetrachloride, CCl 4, and water, H 2 O. Which liquid solvent should she use to remove the oil stain? Justify your answer. Be sure to include: a) the Lewis dot structures for both molecules b) an explanation of how the shape and symmetry of each molecule influences its polarity c) the name of the liquid solvent that will remove the stain d) justification (explanation) for your choice of the liquid solvent that will remove the stain
39 a) The Lewis dot structures for both molecules
40 b) An explanation of how the shape and symmetry of each molecule influences its polarity The electrons being shared by the elements in CCl 4 are being done so equally, resulting in a nonpolar molecule with polar bonds. The electrons in water are attracted to the electronegative oxygen, which results in a partial negative on the oxygen and a partial positive on the hydrogens.
41 C. The name of the liquid solvent that will remove the stain Carbon tetrachloride
42 d) Justification (explanation) for your choice of the liquid solvent that will remove the stain The oil stain is nonpolar, so a nonpolar solvent that will mix with it will be required to remove the stain.
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