Chem 121 Chapter 6 Questions with Verifiable Solutions
(The strength of these attractive forces is directly proportional to the charge separation that
occurs in the molecules. Ionic bonds involve oppositely charged ions, which have the greatest
charge separation. Nonpolar molecules, which form momentary dipole moments, have
dispersion forces and the smallest separation of charge. Ionic bonds are the strongest of these
attractive forces, and dispersion forces are the weakest.)
hottest-coldest
Identify each of the compounds as ionic or molecular.
Drag the appropriate items to their respective bins.✔✔Ionic
iron(II) sulfate
tin(II) fluoride
Molecular
carbon dioxide
A chemical equation is balanced when✔✔the number of atoms of each element is the same in
reactants and products.
In any balanced chemical equation, the number of each type of atom on both sides of the
equation is✔✔the same
Which of the following gives the balanced equation for this reaction?
K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3✔✔2K3PO4 + 3Ca(NO3)2 → Ca3(PO4)2 + 6KNO3
In the following reaction, when the equation is correctly balanced, what is the correct
coefficient for H2?
, Fe(s) + HCl(aq) → FeCl3(aq) + H2(g)✔✔3
In a __________ reaction, two or more elements or compounds form one
product.✔✔combination
How many moles of iron are present in 3.15 × 1024 atoms of iron?✔✔5.23 moles
Submit
One mole of particles of any substance contains how many particles?✔✔6.02 × 1023
How many molecules of water, H2O, are present in 75.0 g of H2O?✔✔2.51 × 1024 molecules
Classify the following reactions as synthesis, decomposition, single-displacement, or double-
displacement reactions.
Drag the items to their respective bins.
In a single-displacement reaction, one element displaces another in a compound.
2. In a double-displacement reaction, two elements or groups of elements in two different
compounds exchange places to form two new compounds.
3. In a decomposition reaction, a complex substance breaks down into simpler substances.
4. In a synthesis reaction, simpler substances combine to form more complex
substances.✔✔Synthesis (combination)
Ni+Cl2→NiCl2Ni+Cl2→NiCl2
C5H10+Br2→C5H10Br2
Decomposition
2H2O→2H2+O22H2O→2H2+O2
(The strength of these attractive forces is directly proportional to the charge separation that
occurs in the molecules. Ionic bonds involve oppositely charged ions, which have the greatest
charge separation. Nonpolar molecules, which form momentary dipole moments, have
dispersion forces and the smallest separation of charge. Ionic bonds are the strongest of these
attractive forces, and dispersion forces are the weakest.)
hottest-coldest
Identify each of the compounds as ionic or molecular.
Drag the appropriate items to their respective bins.✔✔Ionic
iron(II) sulfate
tin(II) fluoride
Molecular
carbon dioxide
A chemical equation is balanced when✔✔the number of atoms of each element is the same in
reactants and products.
In any balanced chemical equation, the number of each type of atom on both sides of the
equation is✔✔the same
Which of the following gives the balanced equation for this reaction?
K3PO4 + Ca(NO3)2 → Ca3(PO4)2 + KNO3✔✔2K3PO4 + 3Ca(NO3)2 → Ca3(PO4)2 + 6KNO3
In the following reaction, when the equation is correctly balanced, what is the correct
coefficient for H2?
, Fe(s) + HCl(aq) → FeCl3(aq) + H2(g)✔✔3
In a __________ reaction, two or more elements or compounds form one
product.✔✔combination
How many moles of iron are present in 3.15 × 1024 atoms of iron?✔✔5.23 moles
Submit
One mole of particles of any substance contains how many particles?✔✔6.02 × 1023
How many molecules of water, H2O, are present in 75.0 g of H2O?✔✔2.51 × 1024 molecules
Classify the following reactions as synthesis, decomposition, single-displacement, or double-
displacement reactions.
Drag the items to their respective bins.
In a single-displacement reaction, one element displaces another in a compound.
2. In a double-displacement reaction, two elements or groups of elements in two different
compounds exchange places to form two new compounds.
3. In a decomposition reaction, a complex substance breaks down into simpler substances.
4. In a synthesis reaction, simpler substances combine to form more complex
substances.✔✔Synthesis (combination)
Ni+Cl2→NiCl2Ni+Cl2→NiCl2
C5H10+Br2→C5H10Br2
Decomposition
2H2O→2H2+O22H2O→2H2+O2
