Covalent Compounds of Carbon
Chemistry ⇒ Carbon and Organic Chemistry
Covalent Compounds of Carbon starts at 8 and continues till grade 12.
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See sample questions for grade 10
A student dissolves sugar (C₁₂H₂₂O₁₁) in water and observes that the solution does not conduct electricity. Explain why.
Calculate the number of covalent bonds in a molecule of ethyne (C₂H₂).
Describe the difference between a single, double, and triple covalent bond in carbon compounds.
Describe the type of bonding present in carbon dioxide (CO₂).
Explain why carbon forms covalent compounds rather than ionic compounds.
Explain why covalent compounds of carbon do not conduct electricity.
A student dissolves sugar (C₁₂H₂₂O₁₁) in water and observes that the solution does not conduct electricity. Explain why.
A student is given two colorless liquids: one is ethanol (C2H5OH) and the other is hexane (C6H14). Both are covalent compounds of carbon. Predict which one will dissolve in water and explain your reasoning.
Which of the following best explains the tetravalency of carbon?
(1) Carbon can form four covalent bonds
(2) Carbon can form two covalent bonds
(3) Carbon can form one ionic bond
(4) Carbon can form three covalent bonds
Which of the following is a covalent compound of carbon?
(1) Sodium chloride
(2) Methane
(3) Calcium carbonate
(4) Potassium iodide
Which of the following is a property of covalent compounds of carbon?
(1) High electrical conductivity
(2) Low melting and boiling points
(3) High solubility in water
(4) Always solid at room temperature
Which of the following is a saturated hydrocarbon?
(1) Ethene
(2) Ethyne
(3) Methane
(4) Benzene
Fill in the blank: In a molecule of methane (CH₄), carbon forms ________ single covalent bonds with hydrogen atoms.
Fill in the blank: The bond angle in a methane (CH₄) molecule is approximately ________ degrees.
Fill in the blank: The covalent bond formed between two carbon atoms in ethene is a ________ bond.
Fill in the blank: The general formula for alkanes is ________.
True or False: All covalent compounds of carbon are colorless.
True or False: Carbon forms covalent bonds by sharing electrons with other atoms.
True or False: Covalent compounds of carbon are generally soluble in organic solvents.
True or False: Covalent compounds of carbon can exist as gases at room temperature.
