Assertion : It is false that covalently bonded molecules can have strong intramolecular bonds but weak intermolecular forces.
Reason : A blue flame indicates a sufficiently oxygen-rich combustion mixture in the described stove activity.
Assertion : It is false that covalently bonded molecules can have strong intramolecular bonds but weak intermolecular forces.
Reason : A blue flame indicates a sufficiently oxygen-rich combustion mixture in the described stove activity.
Assertion : Limited oxygen can cause even saturated hydrocarbons to burn incompletely.
Reason : A hydrogen molecule contains a single covalent bond.
Assertion : Limited oxygen can cause even saturated hydrocarbons to burn incompletely.
Reason : A hydrogen molecule contains a single covalent bond.
Assertion : Ethane is a saturated carbon compound.
Reason : It is false that its relatively high melting point can cause it to freeze in cold climates.
Assertion : Ethane is a saturated carbon compound.
Reason : It is false that its relatively high melting point can cause it to freeze in cold climates.
Assertion : Methanol is oxidised to methanal, which can affect cells and the optic nerve.
Reason : It is false that carbon shows extensive catenation.
Assertion : Methanol is oxidised to methanal, which can affect cells and the optic nerve.
Reason : It is false that carbon shows extensive catenation.
Assertion : It is false that each carbon atom in diamond is bonded to four other carbon atoms in a rigid three-dimensional structure.
Reason : Blocked air holes limit the air supply to the fuel.
Assertion : It is false that each carbon atom in diamond is bonded to four other carbon atoms in a rigid three-dimensional structure.
Reason : Blocked air holes limit the air supply to the fuel.
Assertion : Carbon forms a very large number of compounds.
Reason : Carbon has tetravalency and catenation, enabling extensive bonding and chain formation.
Assertion : Carbon forms a very large number of compounds.
Reason : Carbon has tetravalency and catenation, enabling extensive bonding and chain formation.
Assertion : Ethanol is soluble in water in all proportions.
Reason : It is false that losing or gaining four electrons is energetically difficult for carbon.
Assertion : Ethanol is soluble in water in all proportions.
Reason : It is false that losing or gaining four electrons is energetically difficult for carbon.
Assertion : Wöhler's work challenged the vital-force idea.
Reason : He prepared urea from ammonium cyanate in 1828.
Assertion : Wöhler's work challenged the vital-force idea.
Reason : He prepared urea from ammonium cyanate in 1828.
Assertion : Graphite conducts electricity well.
Reason : The chapter defines vinegar as a 5–8% aqueous solution of acetic acid.
Assertion : Graphite conducts electricity well.
Reason : The chapter defines vinegar as a 5–8% aqueous solution of acetic acid.
Assertion : It is false that methanol, ethanol, propanol and butanol form a homologous series.
Reason : Ethanoic acid reacts with sodium hydroxide to form sodium ethanoate and water.
Assertion : It is false that methanol, ethanol, propanol and butanol form a homologous series.
Reason : Ethanoic acid reacts with sodium hydroxide to form sodium ethanoate and water.
Assertion : It is false that its carbon atoms are connected by a single bond.
Reason : It removes water from ethanol.
Assertion : It is false that its carbon atoms are connected by a single bond.
Reason : It removes water from ethanol.
Assertion : Combustion of carbon is an oxidation reaction that produces CO2.
Reason : Most carbon compounds are poor conductors of electricity.
Assertion : Combustion of carbon is an oxidation reaction that produces CO2.
Reason : Most carbon compounds are poor conductors of electricity.
Assertion : Boiling points increase across a homologous series as molecular mass increases.
Reason : The term hydrophilic refers to interaction with water.
Assertion : Boiling points increase across a homologous series as molecular mass increases.
Reason : The term hydrophilic refers to interaction with water.
Assertion : Carbon shows extensive catenation.
Reason : Carbon forms strong and stable carbon–carbon bonds.
Assertion : Carbon shows extensive catenation.
Reason : Carbon forms strong and stable carbon–carbon bonds.
Assertion : It is false that catenation allows carbon atoms to link into chains and rings.
Reason : The chapter states that even a small quantity of absolute alcohol can be lethal.
Assertion : It is false that catenation allows carbon atoms to link into chains and rings.
Reason : The chapter states that even a small quantity of absolute alcohol can be lethal.
Assertion : Ethyne is more reactive than a saturated hydrocarbon such as ethane.
Reason : Ethyne contains a carbon–carbon triple bond.
Assertion : Ethyne is more reactive than a saturated hydrocarbon such as ethane.
Reason : Ethyne contains a carbon–carbon triple bond.
Assertion : It is false that alkenes are unsaturated hydrocarbons.
Reason : Pure ethanoic acid may freeze in cold climates.
Assertion : It is false that alkenes are unsaturated hydrocarbons.
Reason : Pure ethanoic acid may freeze in cold climates.
Assertion : Boiling points increase across a homologous series as molecular mass increases.
Reason : It is false that ion–ion repulsion prevents the micelles from coming together and precipitating.
Assertion : Boiling points increase across a homologous series as molecular mass increases.
Reason : It is false that ion–ion repulsion prevents the micelles from coming together and precipitating.
Assertion : It is false that they contain the same functional group attached to carbon chains of different lengths.
Reason : It behaves as an acid and neutralises the base.
Assertion : It is false that they contain the same functional group attached to carbon chains of different lengths.
Reason : It behaves as an acid and neutralises the base.
Assertion : It contains a carbon–carbon double bond.
Reason : It is false that ethanoic acid reacts with sodium hydroxide to form sodium ethanoate and water.
Assertion : It contains a carbon–carbon double bond.
Reason : It is false that ethanoic acid reacts with sodium hydroxide to form sodium ethanoate and water.
Assertion : A yellow sooty flame can indicate incomplete combustion.
Reason : Losing or gaining four electrons is energetically difficult for carbon.
Assertion : A yellow sooty flame can indicate incomplete combustion.
Reason : Losing or gaining four electrons is energetically difficult for carbon.
Assertion : Covalently bonded molecules can have strong intramolecular bonds but weak intermolecular forces.
Reason : Poisonous substances such as methanol and dyes are added to make industrial ethanol unfit for drinking and identifiable.
Assertion : Covalently bonded molecules can have strong intramolecular bonds but weak intermolecular forces.
Reason : Poisonous substances such as methanol and dyes are added to make industrial ethanol unfit for drinking and identifiable.
Assertion : Carbon can use its four valencies to bond with elements such as hydrogen, oxygen, nitrogen, sulphur and chlorine.
Reason : It is false that vinegar contains 5–8% acetic acid in water.
Assertion : Carbon can use its four valencies to bond with elements such as hydrogen, oxygen, nitrogen, sulphur and chlorine.
Reason : It is false that vinegar contains 5–8% acetic acid in water.
Assertion : It is false that nickel can catalyse hydrogenation of vegetable oils.
Reason : Chemical properties remain similar within a homologous series.
Assertion : It is false that nickel can catalyse hydrogenation of vegetable oils.
Reason : Chemical properties remain similar within a homologous series.
Assertion : Successive members of the alkene series differ by CH2.
Reason : It is false that soap micelles are large enough to scatter light.
Assertion : Successive members of the alkene series differ by CH2.
Reason : It is false that soap micelles are large enough to scatter light.
Assertion : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Reason : Hydrogenation converts an unsaturated hydrocarbon into a saturated hydrocarbon.
Assertion : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Reason : Hydrogenation converts an unsaturated hydrocarbon into a saturated hydrocarbon.
Assertion : Ethane is a saturated carbon compound.
Reason : Acids reacting with hydrogencarbonates form a salt, water and CO2.
Assertion : Ethane is a saturated carbon compound.
Reason : Acids reacting with hydrogencarbonates form a salt, water and CO2.
Assertion : It is false that chlorine can replace hydrogen atoms of saturated hydrocarbons in sunlight.
Reason : The nomenclature procedure first identifies the number of carbon atoms.
Assertion : It is false that chlorine can replace hydrogen atoms of saturated hydrocarbons in sunlight.
Reason : The nomenclature procedure first identifies the number of carbon atoms.
Assertion : Propanone is formed in nomenclature by modifying propane.
Reason : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Assertion : Propanone is formed in nomenclature by modifying propane.
Reason : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Assertion : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Reason : It is false that hydrophilic groups interact with water.
Assertion : For a ketone suffix beginning with a vowel, the final e is removed before adding “one”.
Reason : It is false that hydrophilic groups interact with water.