chemical bonding review are you ready to play?. chemical bonding review question 1: why do elements...

Chemical Bonding Review

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Chemical Bonding Review

Question 1: Why do elements form chemical bonds.

Chemical Bonding Review

Answer 1: Elements form bonds in order to have 8 valence electrons like the noble gases

Chemical Bonding Review

Question 2: What types of bonds are found in KClO3?

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Answer 2: KClO3 contains both ionic and covalent bonds.

Why? The ionic bond occurs between the positive K+ ion and the negative ClO3

- ion. The ClO3-

ion is held together with covalent bonds.

Chemical Bonding Review

Question 3: Describe the mechanism of ionic bonding.

Chemical Bonding Review

Answer 3: Ionic bonding occurs when a metal transfers electrons to a nonmetal.

Chemical Bonding Review

Question 4: Which set of atoms would likely form polar covalent bonds: a) sodium and chlorine, b) oxygen and hydrogen, c) hydrogen and hydrogen, or d) chlorine and chlorine?

Chemical Bonding Review

Answer 4: Choice b - oxygen and hydrogen would most likely form polar covalent bonds.

Chemical Bonding Review

Question 5:Describe the mechanism of covalent bonding.

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Answer 5: Covalent bonding occurs when 2 nonmetals share electrons.

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Question 6: Which molecule would be nonpolar? a) NaCl, b)CF4, c)H2O, or d) NH3

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Answer 6: Choice b - CF4 would be a nonpolar molecule.

Chemical Bonding Review

Question 7: Which molecule contains polar covalent bonds? a) O2, b) CH4, C) Li2O, d) CO

Chemical Bonding Review

Answer 7: Choice d- CO would contain polar covalent bonds

Chemical Bonding Review

Question 8: The electronegativity difference between phosphorus and nitrogen is 0.8. What type of bond would phosphorus and nitrogen form?

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Answer 8: Phosphorus and nitrogen would form a polar covalent bond.

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Question 9: Which molecule would not be linear? a) O2, b)CO2, c) OF2, or d)HF

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Answer 9: Choice c - OF2 would not be linear.

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Question 10: Which molecule would be a trigonal pyramid?

a) H2O b) SO42- c)SO3

d)NH3

Chemical Bonding Review

Answer 10: Choice d – NH3

would be a trigonal pyramid.

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Question 11: What type of chemical bonds are found in PCl3?

Chemical Bonding Review

Answer 11: PCl3 contains only covalent bonds.

Chemical Bonding Review

Question 12: The electronegativity difference between Br and Cs is 2.1, what type of bond would these elements form?

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Answer 12: Cs and Br would form an ionic bond.

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Question 13: What is the shape of an F2 molecule?

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Answer 13: F2 forms a linear molecule.

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Question 14: Which molecule will likely contain polar bonds? a) H2 b) CH4 c) SO3 d) C2H2

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Answer 14: Choice c- SO3 contains polar bonds

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Question 15: Which compound contains both ionic and covalent bonds?

a) Cu2O b) Ca(NO2)2 c) CCl4 d) H2O

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Answer 15: Choice b- Ca(NO2)2 has both ionic and covalent bonds

Chemical Bonding Review

Question 16: Which molecule contains polar bonds but is nonpolar overall?

a) CF4 b) HCl c) O3 d) SO32-

Chemical Bonding Review

Answer 16: Choice a- CF4 is nonpolar even though it has polar bonds

Chemical Bonding Review

Question 17: Which molecule contains nonpolar bonds but is polar overall?

a) H2O b) HCl c) O3 d) SO32-

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Answer 17: Choice c- O3 is polar even though it contains nonpolar bonds.

Chemical Bonding Review

Question 18: Which molecule will be tetrahedal? a) SO3

2- b) CH4 c) SO3 d) C2H2

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Answer 17: Choice b- CH4 is tetrahedral

Chemical Bonding Review

Question 18: Which set of atoms would likely form a molecular (covalent) compound: a) sodium and chlorine, b) oxygen and lithium, c) hydrogen and oxygen, or d) chlorine and calcium?

Chemical Bonding Review

Answer 18: Choice c - oxygen and hydrogen would most likely form a molecular (covalent) compound.

Chemical Bonding Review

Question 19: Identify the shape of the nitrate ion.

NO3-

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Answer 19: The nitrate ion has a trigonal planar shape.

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Question 20: Which compound would be likely to have a high boiling point: a) H2O, b) CH3Cl, c) FeCl3, or d) NH3?

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Answer 20: Choice c- FeCl3 would most likely have a high boiling point.

Chemical Bonding Review

Question 21: How many possible resonance structures does the nitrate ion have?

NO3-

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Answer 21: The nitrate ion has 3 possible resonance structures.

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Question 22: Which compound would be ionic? a) NaCl, b)CF4, c)H2O, or d) NH3

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Answer 22: Choice a - NaCl

would be a ionic.

Chemical Bonding Review

Question 23: Name 3 properties of ionic compounds.

Chemical Bonding Review

Answer 23: Ionic compounds have the following properties: they are made of metals and nonmetals; they have high melting/boiling points; they are solid state at room temperature; they are brittle solids; they are good conductors electricity when melted or dissolved in water.