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WorksheetsChemistry Review Quiz
Total questions: 20
Worksheet time: 1hrs 12mins
How many valence electrons does sulfur have?
8
7
5
6
Benzoyl Peroxide has a formula of C7H5O2. What is the molar mass?
230 grams
121 grams
175 grams
160 gram
What is the product of 12.75 meters x 0.62 meters rounded to the right number of significant figures
7.91 m2
7.905 m2
8.0 m2
7.9 m2
What is considered to be standard temperature and standard pressure?
00 C, 1.0 atm
2730 C, 0.1 atm
1.00 C, 1.0 atm
00 F, 14.7 lbs/inch2
What is the correct electron configuration for Silicon (Si)
1s22s22p63s23p2
1s22s1253s23p2
1s22s22p63s23p1
1s22s22p63s2
At STP 85.0 L of CO2 weighs how much in grams?
151.7 grams
167.0 grams
224.4 grams
135.8 grams
Name this ionic compound: Cu(OH)3
Copper hydroxide
Copper (I) hydroxide
Copper (III) hydroxide
Copper hydroxide (III)
What is the shape/bond angle of the carbon dioxide molecule?
bent, 104.50
planar triangle, 1200
linear, 1800
bent, 1800
What is the correct sequence for the models of the atom?
plum pudding, nuclear, solid state
quantum mechanical, planetary, plum pudding
solid state, plum pudding, nuclear
solid state, quantum mechanical, planetary
As a general rule on the periodic table atomic radius _______ from left to right and electronegativity ________from left to right across a period
decreases. decreases
increases, decreases
increases, increases
decreases, increases
N2(g) + 3H2(g) ---------------> 2NH3(l)
Based on this reaction how many grams of ammonia would form from 15.0 grams of H2 and excess nitrogen?
100.5 grams
766.8 grams
85.2 grams
191.7 grams
Compounds which are bonded covalently such as CH4, bond by transferring electrons to form positive and negative ions.
True
False
What is the shape of a molecule of ammonia (NH3)?
linear
ring structure
bent
trigonal pyramid
At STP, what would be the volume of 7.25 grams of methane (CH4)?
10.12 L
5.93 L
22.4 L
11.53 L
What is the molar mass of propanoic acid (CH3CH2COOH)?
85.20 g/mole
67.55 g/mole
70.25 g/mole
74.09 g/mole
Elements from which group form ions with a +2 charge?
noble gases
halogens
alkali earths
alkali metals
8.95 x 1023 atoms of strontium weigh how much?
78.6 grams
139 grams
87.6 grams
130. grams
What is the bond angle of a molecule which has a trigonal planar shape?
109.5 degrees
180 degrees
104.5 degrees
120 degrees
How many neutrons are there in an atom of Mg-26?
26
12
13
14
Which of the following is the correct symbol for an alpha particle?
10n
0-1 e
-10 e
42 He
