CARBON
What is the phenomenon called when an element exists in more than one physical state, like graphite and diamond?
Allotropy
What is the term for a liquid’s resistance to flow, such as how honey flows more slowly than water?
Viscosity
What type of bonds do alkenes contain?
A. Only single bonds
B. At least one double bond
C. At least one triple bond
D. Only hydrogen bonds
B. At least one double bond
Which of the following hydrocarbons is commonly used in lighters?
A. Methane
B. Butane
C. Ethane
D. Propane
B. Butane
Which form of carbon is the hardest and is used in cutting tools?
A. Graphite
B. Fullerenes
C. Diamond
D. Charcoal
C. Diamond
What is a compound that contains only carbon and hydrogen?
A. Carbohydrate
B. Hydrocarbon
C. Carbonate
D. Carbonyl
B. Hydrocarbon
Which of the following hydrocarbons contains a triple bond?
A. Propane
B. Ethane
C. Ethyne (Acetylene)
D. Methane
C. Ethyne (Acetylene)
This type of hydrocarbon contains only single bonds between carbon atoms and is also called a paraffin.
A) Alkene
B) Alkyne
C) Alkane
D) Aromatic Hydrocarbon
C) Alkane
Which of the following is NOT a property of organic compounds?
A. Contains carbon
B. Can be artificially produced
C. Always exists as a solid
D. Can be found in plants and animals
C. Always exists as a solid
What type of hydrocarbon has only single bonds between carbon atoms?
A. Alkene
B. Alkyne
C. Alkane
D. Aromatic
C. Alkane
Which statement is true about hydrocarbons?
A. They are all solids at room temperature.
B. They are non-flammable.
C. They can form straight chains, branched chains, and rings.
D. They always contain oxygen.
C. They can form straight chains, branched chains, and rings.
Unsaturated hydrocarbons contain which type of bonds?
A) Only single bonds
B) Single and double or triple bonds
C) Only triple bonds
D) No bonds at all
B) Single and double or triple bonds
What property of matter describes how easily a substance can catch fire?
A. Viscosity
B. Flammability
C. Odor
D. Density
B. Flammability
Which of the following is a hydrocarbon found in natural gas?
A. CH₄ (Methane)
B. H₂O (Water)
C. CO₂ (Carbon dioxide)
D. NH₃ (Ammonia)
A. CH₄ (Methane)
Which family of hydrocarbons consists only of carbon-carbon single bonds?
A. Alkynes
B. Alkenes
C. Alkanes
D. Aromatics
C. Alkanes
Which of the following is a characteristic of saturated hydrocarbons?
A) They contain at least one double or triple bond
B) They are also called paraffins
C) They are highly reactive compared to alkenes
D) They contain fewer hydrogen atoms than alkenes
B) They are also called paraffins
Which of the following is NOT true about hydrocarbons?
A. They mix well with water.
B. They are flammable.
C. They contain only carbon and hydrogen.
D. They can form single, double, or triple bonds.
A. They mix well with water.
What property of hydrocarbons makes them useful as fuels?
A. They are soluble in water.
B. They are good conductors of electricity.
C. They are flammable.
D. They have high density.
C. They are flammable.
What is the smallest hydrocarbon?
A. Ethane
B. Propane
C. Butane
D. Methane
D. Methane