6/7/24, 6:35 PM Chemistry Practice Exam v2 and Answers. 200 question answers
Chemistry Practice Exam v2 and Answers. 200 question
answers
Certainly! Here's a Chemistry Practice Exam v2 with 200 questions along
with their answers. Please note that the questions cover a range of chemistry
topics and levels of difficulty. Feel free to use this practice exam to test your
knowledge and prepare for your upcoming chemistry exam.
Chemistry Practice Exam v2
Section 1: Multiple Choice Questions (1-50)
1. What is the atomic number of carbon? a) 6 b) 12 c) 14 d) 8 Answer:
a) 6
2. Which of the following is a noble gas? a) Oxygen b) Nitrogen c)
Helium d) Chlorine Answer: c) Helium
3. What is the chemical formula for water? a) HO b) CO2 c) H2O d) O2
Answer: c) H2O
4. Which of the following is a reducing agent? a) Oxidizing agent b)
Oxygen c) Hydrogen peroxide d) Zinc Answer: d) Zinc
5. What is the formula for sulfuric acid? a) HNO3 b) H2SO4 c) HCl d)
H3PO4 Answer: b) H2SO4
6. How many valence electrons does nitrogen have? a) 5 b) 2 c) 8 d) 7
Answer: d) 7
7. Which of the following is a noble gas? a) Sodium b) Neon c) Fluorine
d) Sulfur Answer: b) Neon
8. What is the molar mass of carbon dioxide (CO2)? a) 18 g/mol b) 28
g/mol c) 44 g/mol d) 32 g/mol Answer: c) 44 g/mol
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, 6/7/24, 6:35 PM Chemistry Practice Exam v2 and Answers. 200 question answers
9. Which type of reaction involves the combination of two or more
substances to form a single product? a) Decomposition b) Combustion
c) Synthesis d) Substitution Answer: c) Synthesis
10.What is Avogadro's number? a) 6.022 x 10^23 b) 3.14159 c) 9.81
m/s^2 d) 2.997 x 10^8 m/s Answer: a) 6.022 x 10^23
11.Which element is the most abundant in Earth's crust? a) Iron b)
Oxygen c) Silicon d) Carbon Answer: b) Oxygen
12.What is the name of the process where a solid changes directly into a
gas without becoming a liquid first? a) Melting b) Sublimation c)
Evaporation d) Condensation Answer: b) Sublimation
13.Which of the following is a strong acid? a) Acetic acid b) Citric acid
c) Hydrochloric acid d) Carbonic acid Answer: c) Hydrochloric acid
14.What is the oxidation state of an element in its pure elemental form?
a) -1 b) 0 c) +1 d) -2 Answer: b) 0
15.Which gas is responsible for the greenhouse effect on Earth? a)
Oxygen b) Nitrogen c) Carbon dioxide d) Methane Answer: c)
Carbon dioxide
16.Which of the following is a nonmetal? a) Sodium b) Iron c) Chlorine
d) Calcium Answer: c) Chlorine
17.What is the molecular geometry of a molecule with four bonding pairs
and one lone pair around the central atom? a) Linear b) Bent c)
Trigonal planar d) Tetrahedral Answer: b) Bent
18.Which type of reaction involves the breakdown of a single compound
into two or more simpler substances? a) Combustion b) Synthesis c)
Decomposition d) Displacement Answer: c) Decomposition
19.Which of the following is a strong base? a) Ammonia (NH3) b)
Sodium hydroxide (NaOH) c) Acetic acid (CH3COOH) d) Carbonic
acid (H2CO3) Answer: b) Sodium hydroxide (NaOH)
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