Shapes, Properties, and Uses (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What molecular shape does ethane () have around each carbon atom?
What molecular shape does ethane () have around each carbon atom?
Tetrahedral
What are the bond angles in ethane ()?
What are the bond angles in ethane ()?
109.5°
What molecular arrangement does ethene () show around each carbon?
What molecular arrangement does ethene () show around each carbon?
Trigonal planar
What geometry does ethyne () demonstrate?
What geometry does ethyne () demonstrate?
Linear
What are the bond angles in benzene ()?
What are the bond angles in benzene ()?
120°
What determines the molecular shape of hydrocarbons?
What determines the molecular shape of hydrocarbons?
Number of sigma bonds around C
How do boiling points change as alkane chain length increases?
How do boiling points change as alkane chain length increases?
They increase progressively
How do branched alkanes compare to straight-chain isomers in boiling point?
How do branched alkanes compare to straight-chain isomers in boiling point?
Lower boiling points
Why are hydrocarbons insoluble in water?
Why are hydrocarbons insoluble in water?
They are non-polar; water is polar
Why are alkenes more chemically reactive than alkanes?
Why are alkenes more chemically reactive than alkanes?
Due to their C=C double bonds
What is methane's primary use?
What is methane's primary use?
Main component of natural gas
What are ethene and propene used to produce?
What are ethene and propene used to produce?
Plastics like polyethene