Download Practice Problems for Chapter 4 1. The alkaline earth metals include

Practice Problems for Chapter 4
1. The alkaline earth metals include which of the following?
A)
Mg, Ca, and Sr
C)
Mn, Ca, and Sr
B)
Mg, Cu, and Sr
D)
Mn, Cu, and Sn
A)
B)
2. Silver and gold are examples of what type of element?
main group non-metals
C)
main group metals
representative metals D)
transition metals
3. When a compound forms because an electron or electrons is transferred from
one element to another, it is referred to as what type of compound?
A) ionic B) covalent C) metallic D) coordinate covalent
4. The name of this ion, Sr2+, is strontonium.
A) True B) False
5. What is the name of this chemical species, O2–?
A) oxonium ion B) oxide ion C) oxygen ion D) oxide atom
A)
B)
6. Na+ is called what?
the sodium atom
the sodium ion D)
C)
the potassium atom
the potassium ion
7. What is the correct formula of an ionic compound made only from sodium and
oxygen?
A) NaO B) Na2O C) NaO2 D) Na2O2
8. What formula does an ionic compound made from Cu2+ and nitrogen possess?
A) CuN B) Cu3N2 C) Cu2N3 D) Cu3N3
9. What is the balanced form of this equation: H2 + Cl2 → HCl ?
A) H2 + Cl2 → 2 HCl
C) 2 H + 2 Cl → 2 HCl
D) 2 H + 2 Cl → H2Cl2
B) H2 + Cl2 → H2Cl2
10. What is the mass of 0.5 mole of S atoms?
A) 16 g B) 32 g C) 8.0 g D) 0.5 g
11. The mass of 3.0 moles of NaCl is what?
A) 3.00 g B) 175.5 g C) 58.5 g D) 19.0 g
12. 116 g of isopropanol, formula C3H8O, contains how many moles?
A) 58.0 moles B) 1.0 moles C) 1.5 moles D) 2.0 moles
13. How many grams of water are produced if 32.0 g of CH4 are completely
consumed, according to the equation CH4 + 2 O2 → CO2 + 2 H2O?
14. If 78.0 g of potassium are consumed to make KCl according to the equation 2
K + Cl2 → 2 KCl, how much product can form?
15. When O2 reacts with C2H6, according to the equation: 2 C2H6 + 7 O2 → 4 CO2
+ 6 H2O, how much CO2 is produced from 60.0 g of C2H6?
16. In the reaction 2 Na + Cl2 → 2 NaCl, how much sodium chloride can be
produced from 235.0 g of Cl2?
A) 235.0 g B) 193.3 g C) 387.3 g D) 96.8 g
A)
B)
17. What type of reaction is the following: 2 Na + Cl2 → 2 NaCl?
an oxidation–reduction reaction
C)
a combustion
a decomposition reaction
D)
a precipitation reaction
18. What kind of reaction is 2 K + Br2 → 2 KBr?
A)
a precipitation reaction
C)
a neutralization reaction
B)
an oxidation–reduction reaction
D)
a decomposition reaction
19. What is the theoretical yield of carbon dioxide when 56.0 g of methane is
burned in an excess of oxygen, according to the equation CH4 + 2 O2 → CO2
+ 2 H2O?
20. What do Sc, Mn, and Os have in common?
A)
They are all main group metal elements.
B)
They are all representative elements.
C)
They are all transition metal elements.
D)They are all alkaline earth elements.
A)
B)
C)
D)
21. What is the name of He+?
helioid ion
helium ion
helium atom
It has no name because it doesn't exist.
22. What is the name of the ion, CN–?
A) the cyanide ion B) the cyanate ion C) the sulfate ion D) the sulfite ion
23. An ionic compound made from potassium and chromate has what formula?
A) K3CrO4 B) KCrO4 C) K2CrO4 D) K2(CrO4)2
24. When electrons are shared between two atoms' outer electron shells, what kind
of bond forms?
A)
B)
C)
D)
25. Where do the shared electrons in a covalent bond tend to be found?
closer to the less electronegative element
closer to the more electronegative element
equally spaced between both elements in the bond
at the more electronegative element in the bond
26. What type of reaction is 4 Fe + 3 O2 → 2 Fe2O3?
an oxidation–reduction reaction
C)
a double displacement reaction
a precipitation D)
a neutralization reaction
27. What is the formula of an ionic compound made from sodium and nitrogen?
28. What is a crystal lattice?
29. What is the name of N2O4?
30. What type of reaction is 2 Li + Cl2 → 2 LiCl?
31. How many grams of H2O are formed from the complete reaction of 32 g of O2
according to this equation: 2 H2+ O2 → 2 H2O?
32. In the reaction 4 Fe + 3 O2 → 2 Fe2O3, how much oxygen is needed to react
completely with 19.83 g of iron?
33. What is the limiting reactant in a stoichiometric equation?
34. If the reaction LiOH + HCl → LiCl + H2O starts with 30.5 g HCl and 24.0 g
LiOH, which is the limiting reactant?