Chemistry Quiz on Transition Metals and Catalysis

What is the process by which reactants form bonds to the surface of a solid catalyst?

• Adsorption

• Absorption

• Desorption

• Diffusion

What is the process by which reactants break bonds from the surface of a solid catalyst?

• Adsorption

• Absorption

• Desorption

• Diffusion

What is a complex ion?

• An ion with a single metal atom

• An ion with a central metal atom surrounded by ligands

• An ion with multiple non-metal atoms

• An ion with a single non-metal atom

What is the coordination number?

• The number of ligands in a complex ion

• The number of dative covalent bonds formed with the central metal ion

• The number of electrons in the outer shell

• The number of protons in the nucleus

What type of bond is a dative covalent bond?

• A bond where both electrons are provided by one bonding atom

• A bond where electrons are shared equally

• A bond where electrons are transferred

• A bond where electrons are shared unequally

What is a ligand?

• An atom, ion, or molecule that forms a coordinate bond with a central transition metal ion

• A molecule that donates electrons to a non-metal

• A molecule that accepts electrons from a non-metal

• A molecule that forms ionic bonds with metals

What is ligand exchange?

• A reaction in which one ligand in a transition metal complex is replaced by another

• A reaction in which a ligand is added to a transition metal complex

• A reaction in which a ligand is removed from a transition metal complex

• A reaction in which a ligand is oxidized

What is the role of a catalyst in a chemical reaction?

• To increase the rate of the reaction

• To decrease the rate of the reaction

• To change the products of the reaction

• To change the reactants of the reaction

What is the charge of an ion or a theoretical charge of an atom in a covalently bonded compound assuming the bond becomes ionic?

• Oxidation state

• Coordination number

• Bond angle

• Degenerate orbitals

In octahedral complexes, how many orbitals are higher in energy? Leading to coloured compounds.

• One

• Two

• Three

• Four