link to Chemistry gateway, which contain links to videos about various chemistry concepts - you'll have to find the relevant specific link(s) to do this assignment.

on a sheet of paper, (i) answer the below questions based on your textbook and the above video link, (ii) include textbook page number(s) and url of the website (or sequence of links starting from the above link), where you found the answer, and (iii) include the names of all group members and identify the recorder.

topic(s): chemical formula / chemical name - ionic compounds

questions [24 points; 2 points / question]

1. what's the difference between a molecule versus a compound (based on the following example) ?

  compound ? molecule ?
water; H2O yes yes
oxygen; O2 no yes

2. based on the following examples of chemical formulas,

H2O (water)

C6H12O6 (glucose)

Ca(OH)2

Mg(NO3)2

(NH4)2SO4

identify the atom(s) and the number of each atom in one molecule.

3. based on the preceding example of chemical formulas, (i) what information is provided by a chemical formula and (ii) how is the information conveyed ?

4. what's the difference(s) between an atom, cation, and anion ?

5. what's the relationship between the name of an atom and the name of its corresponding (monoatomic) cation ?

6. what's the relationship between the name of an atom and the name of its corresponding (monoatomic) anion ?

7. filled in the blanks.

ionic compounds are composed of (i) _____, which maybe a(n) ____ or a(n) ________, or (ii) a(n) _____ and a(n) ____, which is separated by a "diagonal" in your periodic table handout.

using the terms (there are extraneous terms)

atom(s) compound ion(s) nonmetal
cation metal molecule anion

8. fill-in the below table in regards to various ionic compounds.

chemical formula chemical name
NaCl  
KOH  
Ca(OH)2  
(NH4)2S  

a. based on your preceding answers, generalize the relationship between the chemical formula of an ionic compound and its chemical name; e.g. chemical name of an ionic compound = _____________________.

b. identify the cation and anion, by its chemical symbol and its name, in the above table.

c. identify the number of each cation and anion in one "molecule" of the ionic compound in the above table.

9. Some cations have multiple possible charges; e.g. Fe 2+ versus Fe 3+; fill-in the below table in regards to various ionic compounds, where your answer accounts for the different charge of the cation - you'll have to determine how to accomplish this goal.

chemical formula chemical name
FeCl2  
FeCl3  
CuOH  
SnS2  

a. based on your preceding answers, generalize the relationship between the chemical formula of an ionic compound and its chemical name; e.g. chemical name of an ionic compound = _____________________, which is slightly different from your answer in question 8a. what is the difference ?

10. what is the charge of an ionic compound ? based on your answer, what is the relationship between the (net / total) charge of a cation and anion in an ionic compound ?

11. in the below periodic table, oxidation state refers to "charge" of the ion [source: https://sciencenotes.org/wp-content/uploads/2014/05/PeriodicTableOxidation.png]

periodic table_atom charges

a. patterns; based on the above periodic table, what is the (common) charge of ions in __ ?

i. column 1

ii. column 2

iii. column 17

iv. column 16

12. fill-in the below table in regards to various ionic compounds based on your preceding answers..

chemical formula chemical name
  lithium hydroxide
  barium sulfide
  barium hydroxide
  lead (II) sulfate
  aluminum oxide