Ch. 3 & 4 atom & molecules test 70 points chemistry
symbol |
# protons |
# neutrons |
# electrons |
charge |
Atomic mass |
33P -3 |
|
|
|
|
|
|
|
|
36 |
+ 2 |
89 |
|
|
9 |
10 |
|
17 |
2. Describe the Bohr model of an atom. [5 points]
3. Identify by name (not symbol) the atoms and the number of each atom in the following compounds. [18 points]
a. CH3 (CH2 )4 CH2 OH: _______________________________________
b. Pb(NO3 )2 : _______________________________________________
c. (NH4 )2 S: __________________________________________________
4. Write the chemical formula of the following ionic compounds containing: [12 points]
a. calcium & iodine
b. K & OH [charge of ions are not shown – you have to determine its charge]
c. Fe 3+& S [charge of S is not shown – you have to determine its charge]
5. fill-in the below table [20 points]
chemical formula |
chemical name |
|
lead (IV) hydroxide |
|
aluminum carbonate |
|
calcium phosphate |
|
trisilicon hexaoxide |
K2S |
|
Mg(OH)2 |
|
ZnSO4 |
|
N2O5 |
|
SO2 |
|
PCl3 |
|