Chapter 1 . Chemical Foundations
Q1. How many significant figures are there in each of the following values?
a. 6.07 x 10-15 3
b. 0.003840 4
c. 17.00 4
d. 301 3
e. 300. 3
f. 0.00480 3
Q2. Evaluate each of the following and write the answer to the appropriate number
of significant figures.
a. 212.2 + 26.7 + 402.09 641.0
b. 52.331 + 26.01 – 0.9981 77.34
c. 2.01 x 102 + 3.014 x 103 3215 or
3.215 x 103
Q3. Perform each of the following conversions.
a. 294.5 nm to centimeters
b. 903.3 angstrom to meters
2.945x10-5 cm
9.033 x 10-8 m
Q4. Defination following keywords
a.
b.
c.
d.
e.
f.
Macroscopic and Microscopic
Law and Theory
Precision and Accuracy
Homogeneous and Heterogeneous
Proton and Neutron
Covalent bond and ionic bond
Chapter 2 . Naming Simple Compounds
Q1. Give the names of the elements that correspond to the following symbols :
Sn , Pt, Hg, Mg, K, Mn, Co, Al, P, Na
Tin , Platinum , Mercury, Magnesium , Potassium
Cobalt , Aluminum , Phosphorus , Sodium
Q2. Name each of the following compounds
a. Fe2+ Iron(II) or ( Ferrous ion )
b. Fe3+ Iron(III) or ( Ferric ion )
c. S2- Sulfide
d. P3- Phosphide
a.
b.
c.
d.
CsF
Cesium Fluoride
Ag2S Silver Sulfide
TiO2
Titanium Oxide ( dioxide)
MnO2 Manganese Oxide
a.
b.
c.
d.
e.
NaHCO3 Sodium hydrogen carbonate
NaOCl Sodium hypochlorite
HClO Hypochlorous acid
H2SO4 Sulfuric acid
Na2CO3
Sodium Carbonate
Q3. Write the formula for each of the following compounds:
a.
b.
c.
d.
e.
f.
g.
Silicon dioxide SiO2
Sodium sulfite Na2SO3
Aluminum hydrogen sulfate
Al(HSO4)3
Nitrogen trichloride NCl3
Bromous acid
HBrO2
Perbromic acid HBrO4
Potassium hydrogen sulfide KHS