Chemical Reactions and Mechanisms

What is the definition of homolytic fission?

• The breaking of a bond where each atom retains one of the shared electrons

• The breaking of a bond where one atom retains both of the shared electrons

• The formation of a new bond

• The movement of electrons in a reaction.

In the reaction mechanism shown, what does the curly arrow represent?

• Movement of protons

• Movement of electrons

• Formation of a new bond

• Breaking of a bond.

What type of bond is formed by the overlap of p-orbitals between carbon atoms?

• Sigma (σ) bond

• Pi (π) bond

• Ionic bond

• Hydrogen bond

In the formation of a π-bond, the overlap occurs between ______.

• s-orbitals

• p-orbitals

• d-orbitals

• f-orbitals

In the 'Electrophilic Addition' activity, students are instructed to work in groups of ____. A) 2 B) 3 C) 4 D) 5.

• 2

• 3

• 4

• 5

What is the primary use of curly arrows in chemistry?

• To indicate the movement of electrons

• To show the direction of a reaction

• To represent the flow of energy

• To mark the position of atoms.

Which of the following is a correct way to draw a curly arrow from a carbon-carbon double bond to a bromine atom?

• From the middle of the double bond to Br

• From the end of the double bond to Br

• From Br to the double bond

• From the double bond to the middle of Br

Fill in the blank: When drawing a curly arrow from a carbon-carbon double bond to a bromine atom, the arrow should start from the ______ of the double bond.

• middle

• end

• beginning

• top

Fill in the blank: In a correct curly arrow notation for bromine atoms, the arrow should start from the _______ charge and point towards the _______ charge.

• A) positive, negative

• B) negative, positive

• C) neutral, positive

• D) positive, neutral

Which of the following representations of curly arrows is correct when showing the movement of electrons from bromine to a positively charged carbon?

• C+ → :Br-

• Cδ+ → :Br-

• C+ ← Br-

• C+ → Br-