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Atoms, Ions and Bonding
  • 1. Why do the noble gases NOT form compounds readily?
A) None of these.
B) They have no electrons.
C) They have empty outer energy levels.
D) They have seven electrons in the outer energy levels.
E) Their outer energy levels are completely filled with electrons.
  • 2. What is the name of a compound made up of lithium and chlorine?
A) lithium chlorate
B) lithium chloride
C) None of these.
D) chlorine lithium
E) chlorine lithiate
  • 3. If an neutral atom loses electrons ...
A) it will have a negative charge
B) it’s weight will increase
C) it will have a positive charge
D) it will remain neutral because electrons do not affect the charge
  • 4. Decide if MgCl2 is ionic or covalent and name it.
A) Ionic, Magnesium chloride
B) Covalent, Manganese chloride
C) Ionic, Magneside chlorine
D) Covalent, Magnesium chloride
  • 5. Find the oxidation number for each of the elements (Na and N) and use the criss-cross rule to form the appropriate ionic compound.
A) NNa3
B) Na7N11
C) NaN3
D) Na3N
  • 6. What element has bright yellow crystals, 6 valence electrons and 16 neutrons?
A) Neon
B) Oxygen
C) Sulfur
D) Lead
  • 7. What is the correct formula for magnesium oxide?
A) MgO
B) MgO2
C) Mg2O2
D) Mg2O
  • 8. What is an ion?
A) an atom with more neutrons than electrons
B) an atom with an different number of protons and neutrons
C) an atom that has an different number of protons and electrons.
D) None of these.
E) an atom with more electrons than neutrons
  • 9. What is the correct ratio of the atoms of the two elements present in a sample of the compound copper chloride, CuCl2?
A) 1:2
B) 1:1
C) 2:1
D) 0:0
  • 10. What is the formula for the covalent compound dinitrogen pentoxide?
A) N3O
B) NOH
C) N2O5
D) NO
  • 11. If an isotope of gold has 81 neutrons, what is its mass?
A) 160
B) 81
C) 2
D) 79
  • 12. What is the name of IF7?
A) Hydroiodide flourine
B) if
C) Iodide flouride
D) Iodine flourine
E) Iodine heptaflouride
  • 13. For the element, Carbon, which is correct for the number of protons and valence electrons?
A) protons = 6 and valence electrons = 6
B) protons = 6 and valence elctrons = 4
C) protons = 12.011 and valence electrons = 6
D) protons = 6 and valence electrons = 12.011
  • 14. Find the oxidation number for the element Na and the compound SO4-2 and use the criss-cross rule to form the appropriate ionic compound.
A) Na2SO4
B) NaSO8
C) NaSO4
D) Na(SO4)_2
  • 15. Which element is a noble gas?
A) Argon
B) None of these.
C) Flourine
D) Benzene
E) Chrlorine
  • 16. How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
A) 8
B) None of these.
C) 2
D) 6
E) 4
  • 17. Is Al2O3 an ionic compound or a covalent compound?
A) ionic
B) None of these.
C) covalent
D) both ionic and covalent
E) neither ionic nor covalent
  • 18. The elements in Groups 3 through 12 of the periodic table are the ___
A) alkaline earth metals
B) bactinides
C) transition elements
D) actinides
E) halogens
  • 19. What is the name of the compound with the formula NaCl?
A) sodium chlorate
B) None of these.
C) chlorine sodiate
D) sodium dichloride
E) sodium chloride
  • 20. Atoms of the same element with different numbers of neutrons are called ___
A) isotopes
B) radioactive
C) metals
D) metalloids
E) None of these.
  • 21. Which of the following elements have similar reactivity based on the corresponding groups?
A) Z Ia Y
B) Mg Ca Sr
C) K Ca Sc
D) Na K Ca
E) C N O
  • 22. A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ___
A) 30
B) None of these.
C) 26
D) 56
E) 52
  • 23. Find the oxidation number for each of the elements Al and S and use the criss-cross rule to form the appropriate ionic compound.
A) AlS
B) Al13S16
C) Al2S2
D) None of these.
E) Al2S3
  • 24. What type of bond forms between a metal and a non-metal?
A) ionic
B) triinary
C) metallic
D) covalent
E) binary
  • 25. Which of the following is the correct formula for magnesium nitrate if nitrate is (NO3)-1?
A) Mg(NO3)_2
B) Mg2(NO3)_2
C) None of these.
D) Mg2NO3
E) MgNO3
  • 26. Balance the equation Na + Cl2 -> NaCl
A) Na + 2Cl2 -> NaCl
B) None of these.
C) Na + Cl2 -> Na2Cl2
D) 2Na + Cl2 -> NaCl
E) Na + Cl2 -> NaCl2
  • 27. Balance the equation FeO + C -> Fe + CO2
A) 2FeO + C -> 2Fe + CO2
B) FeO + C -> 3F3 + CO
C) FeO + C -> Fe + CO2
D) The equation is already balanced.
E) FeO + C -> 2Fe + CO2
  • 28. The best order for balancing a chemical equation is to balance ...
A) the non-metals and then the metals
B) the O and H and then everything else
C) None of these.
D) the metals, then the non-metals (except H and O) and then balance the H and then balance the O
E) the hydrogen and then the oxygen and then the metals
  • 29. The bonding characteristics of Sodium are most similar to ...
A) Magnesium
B) Carbon
C) Argon
D) Oxygen
E) Rubidium
  • 30. How many protons, electrons and neutrons are in a neutral atom Sodium?
A) 12p 11e 11n
B) 12p 12e 12n
C) 11p 12e 11n
D) 11p 11e 12n
E) None of these
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