Name ________________
1.
Bonding Practice Exam
Date:_________________
Given the balanced equation:
I + I ® I2 Which statement describes the process represented by this equation?
1) A bond is formed as energy is absorbed.
3) A bond is broken as energy is absorbed.
2) A bond is formed and energy is released. 4) A bond is broken and energy is released.
2. The forces between atoms that create chemical bonds are the result of interactions between
1) nuclei
2) electrons
3) protons and electrons
4) protons and nuclei
3. A barium atom attains a stable electron configuration when it bonds with
1) one chlorine atom
2) two chlorine atoms
3) one sodium atom
4) two sodium atoms
4. Which electron-dot diagram represents H2?
1)
2)
3)
4)
5. Which term indicates how strongly an atom attracts the electrons in a chemical bond?
1) alkalinity
2) atomic mass
3) electronegativity
4) activation energy
6. The bonds in BaO are best described as
1)
2)
3)
4)
covalent, because valence electrons are shared
covalent, because valence electrons are transferred
ionic, because valence electrons are shared
ionic, because valence electrons are transferred
7. Base your answer to the following question on The data table below represents the properties determined by
the analysis of substances A, B, C, and D.
Which substance is an ionic compound?
1) A
2) B
3) C
4) D
8. Based on bond type, which compound has the highest melting point?
1) CH 3OH
2) C6H14
3) CaCl2
4) CCl4
9. Which type of substance is soft, has a low melting point, and is a poor conductor of heat and electricity?
1) network solid
2) molecular solid 3) metallic solid
4) ionic solid
10. Metallic bonding occurs between atoms of
1) sulfur
2) copper
3) fluorine
Chemistry!
4) carbon
Bonding Practice Exam
11. Which sample is composed of particles arranged in a regular geometric pattern?
1) Cl 2(g)
2) CCl4( )
3) LiCl(s)
4) LiCl(aq)
12. Base your answer to the following question on Given a formula for oxygen:
What is the total number of electrons shared between the atoms represented in this formula?
1) 1
2) 2
3) 8
4) 4
13. Which Lewis electron-dot diagram represents an atom in the ground state for a Group 13 element?
1)
2)
3)
4)
14. What is the total number of valence electrons in a sulfide ion in the ground state?
1) 8
2) 2
3) 16
4) 18
15. Which type of bonding is found in all molecular substances?
1) covalent bonding
2) hydrogen bonding
3) ionic bonding
4) metallic bonding
16. The bond between Br atoms in a Br2 molecule is
1)
2)
3)
4)
ionic and is formed by the sharing of two valence electrons
ionic and is formed by the transfer of two valence electrons
covalent and is formed by the sharing of two valence electrons
covalent and is formed by the transfer of two valence electrons
17. Conductivity in a metal results from the metal atoms having
1)
2)
3)
4)
high electronegativity
high ionization energy
highly mobile protons in the nucleus
highly mobile electrons in the valence shell
18. Which formula represents a nonpolar molecule?
1) CH 4
2) HCl
3) H2O
4) NH 3
19. Which molecule contains a nonpolar covalent bond?
1)
2)
3)
4)
20. Which electron-dot diagram represents a molecule that has a polar covalent bond?
1)
2)
3)
4)
Chemistry!
Bonding Practice Exam
21. Given the Lewis electron-dot diagram:
Which electrons are represented by all of the dots?
1)
2)
3)
4)
the carbon valence electrons, only
the hydrogen valence electrons, only
the carbon and hydrogen valence electrons
all of the carbon and hydrogen electrons
22. Which Lewis electron-dot structure is drawn correctly for the atom it represents?
1)
2)
3)
4)
23. Which Lewis electron-dot diagram is correct for a S 2– ion?
1)
2)
3)
4)
24. Which is the electron-dot symbol for an atom with an electron configuration of 2-5?
1)
2)
3)
4)
25. Which Lewis electron-dot diagram represents calcium oxide?
1)
2)
3)
4)
26. Which electron-dot diagram best represents a compound that contains both ionic and covalent bonds?
1)
2)
3)
Chemistry!
4)
Answer Key
Bonding Unit Exam
1.
2
2.
3
3.
2
4.
2
5.
3
6.
4
7.
4
8.
3
9.
2
10.
2
11.
3
12.
4
13.
3
14.
1
15.
1
16.
3
17.
4
18.
1
19.
3
20.
1
21.
3
22.
4
23.
4
24.
2
25.
4
26.
2
Chemistry!