30 Questions
What percentage of the Earth's crust is composed of carbon?
0.9%
What percentage of all known compounds are organic compounds?
85%
What are the two most abundant elements in the Earth's crust?
Oxygen and silicon
Approximately how many organic compounds have been discovered or synthesized?
10 million
How many new organic compounds are reported each year?
10,000
What is the main reason for studying carbon compounds as a separate discipline?
The sheer number of organic compounds
What is the primary classification of hydrocarbons based on the type of bond between carbon atoms?
Saturated or unsaturated
What is the general formula for alkanes?
CnH2n+2
What is the difference between aliphatic and aromatic hydrocarbons?
Aliphatic hydrocarbons do not contain benzene rings, while aromatic hydrocarbons do
What is the characteristic of aromatic hydrocarbons?
They contain a benzene ring with three alternating double bonds
What is the characteristic of unsaturated hydrocarbons?
They contain at least a carbon – carbon double or triple bond
What is the term used to describe hydrocarbons that contain only single bonds?
Paraffins
What is the characteristic property of organic compounds that makes them combustible?
Presence of carbon and hydrogen atoms
What is the main use of cellulose in plants?
To maintain structure
Which of the following elements is NOT typically found in organic compounds?
Calcium
What is the primary source of organic compounds?
Natural sources
What is the most common alloy formed with iron and carbon?
Carbon steel
Which type of compound is characterized by the presence of a triple bond between carbon atoms?
Alkyne
What is the source of raw materials for many synthetic carbon polymers?
Crude oil
What is graphite used for in the manufacturing process of glass?
As a molding material
What is the study of carbon-containing molecules called?
Organic chemistry
What is charcoal used for in the production of metals?
Iron smelting
Which of the following is an example of an inorganic compound?
Na2CO3
What is the primary use of crude oil in the petrochemical industry?
To produce gasoline and kerosene
What are the three types of hydrocarbons mentioned in the text?
Alkanes, alkenes, and alkynes
What is the function of nucleic acids in living organisms?
To transfer information from one generation to the next
What is the characteristic that defines organic compounds?
Presence of carbon
What is the primary source of power for living systems?
Amino acids and proteins
Why is it important to study organic chemistry?
To understand the properties and uses of organic compounds
Which of the following is NOT an organic compound?
Carbon dioxide
Explore the basics of organic chemistry, focusing on carbon and its unique properties. Learn how carbon differs from other elements in the periodic table and its significance in the Earth's crust. Understand the distinction between organic and inorganic chemistry.
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