About this Study Set
This study set covers Organic Chemistry through
20 practice questions.
Basic concepts and building blocks of organic chemistry, focusing on carbon and its compounds relevant to middle school curriculum. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 20 questions from the
Introduction to Organic Chemistry study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
What element is the foundation of all organic compounds?
-
A
Oxygen
-
B
Nitrogen
-
C
Carbon
-
D
Hydrogen
2
Which of the following is a simple organic molecule found in sugar?
-
A
Water (H2O)
-
B
Carbon dioxide (CO2)
-
C
Glucose (C6H12O6)
-
D
Salt (NaCl)
3
What is the most common element bonded to carbon in organic molecules?
-
A
Oxygen
-
B
Sulfur
-
C
Nitrogen
-
D
Hydrogen
4
A molecule made up of only carbon and hydrogen atoms is called a:
-
A
Alcohol
-
B
Alkane
-
C
Carboxylic acid
-
D
Ketone
5
Which common substance is a natural organic polymer found in plants?
-
A
Plastic
-
B
Rubber
-
C
Cellulose
-
D
Glass
6
What is the primary source of organic compounds on Earth?
-
A
Rocks
-
B
Minerals
-
C
Living organisms
-
D
The Sun
7
Which of these is an example of an organic compound found in living things?
-
A
Iron
-
B
Aluminum
-
C
Proteins
-
D
Silicon
8
What is the process by which plants make their own organic food using sunlight?
-
A
Respiration
-
B
Fermentation
-
C
Photosynthesis
-
D
Combustion
9
A chain of repeating organic units is called a:
-
A
Monomer
-
B
Polymer
-
C
Element
-
D
Compound
10
Which gas, essential for breathing, is produced during photosynthesis from organic compounds?
-
A
Carbon dioxide
-
B
Nitrogen
-
C
Oxygen
-
D
Methane
11
Organic chemistry is the study of compounds containing:
-
A
Only oxygen
-
B
Only hydrogen
-
C
Carbon and its compounds
-
D
Noble gases
12
What makes carbon unique and able to form many different organic molecules?
-
A
It is a gas
-
B
It has only one electron
-
C
It can form four bonds
-
D
It is very light
13
Which of these is a common organic fuel source?
-
A
Water
-
B
Sand
-
C
Natural gas
-
D
Iron ore
14
The simplest alkane molecule has the formula:
-
A
CH4
-
B
C2H6
-
C
C3H8
-
D
C4H10
15
What type of bond is typically formed between carbon atoms in organic molecules?
-
A
Ionic bond
-
B
Hydrogen bond
-
C
Covalent bond
-
D
Metallic bond
16
Organic compounds are generally characterized by their:
-
A
High melting points
-
B
Solubility in water
-
C
Flammability
-
D
Ability to conduct electricity
17
Which part of a plant provides the carbon atoms for many organic compounds?
-
A
Roots
-
B
Leaves
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C
Stem
-
D
Flower
18
A molecule that contains a ring of carbon atoms is called a:
-
A
Straight chain molecule
-
B
Branched chain molecule
-
C
Cyclic molecule
-
D
Linear molecule
19
Which of these is a naturally occurring organic compound that is a building block for life?
-
A
Diamond
-
B
Graphite
-
C
Amino acid
-
D
Ozone
20
Organic compounds are found in many everyday items, such as:
-
A
Batteries
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B
Fertilizers
-
C
Soaps
-
D
Glass
