Alkenes (OCR A-Level Chemistry A): Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What type of hydrocarbon are alkenes classified as?
What type of hydrocarbon are alkenes classified as?
Unsaturated hydrocarbons
What is the general formula for aliphatic alkenes with a single double bond?
What is the general formula for aliphatic alkenes with a single double bond?
How many hydrogen atoms does each additional double bond remove from an alkene molecule?
How many hydrogen atoms does each additional double bond remove from an alkene molecule?
Two hydrogen atoms
How many sigma bonds does each carbon atom in a C=C double bond form?
How many sigma bonds does each carbon atom in a C=C double bond form?
Three sigma bonds
How does the pi bond in a C=C double bond form?
How does the pi bond in a C=C double bond form?
Sideways overlap of p-orbitals
What does the pi bond restrict around the C=C double bond?
What does the pi bond restrict around the C=C double bond?
Rotation around the double bond
What is the shape around each carbon atom in a C=C double bond?
What is the shape around each carbon atom in a C=C double bond?
Trigonal planar
What are the bond angles around each carbon atom in the C=C double bond?
What are the bond angles around each carbon atom in the C=C double bond?
120°
What feature of beta-carotene is responsible for its orange colour?
What feature of beta-carotene is responsible for its orange colour?
Multiple C=C bonds (conjugation)