C1 Introduction to Organic Chemistry

What is the primary focus of organic chemistry?

• Study of carbon and its compounds

• Study of metals and their compounds

• Study of inorganic minerals

• Study of gases and their properties

Which bond is formed by the sharing of electrons?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Metallic bond

What is the octet rule?

• Atoms cannot form more than three bonds

• Atoms can only bond with other atoms of the same element

• Atoms lose electrons to become stable

• Atoms prefer to have eight electrons in their outer shell

Which of the following is a characteristic of a polar covalent bond?

• Electrons are completely transferred

• Electrons are shared equally

• Electrons are shared unequally

• No charge separation occurs

What type of isomers differ in their bonding sequence?

• Stereoisomers

• Constitutional isomers

• Geometric isomers

• Enantiomers

Which of the following compounds can form hydrogen bonds?

• Methane (CH4)

• Ethanol (C2H5OH)

• Benzene (C6H6)

• Ethylene (C2H4)

What is the role of a Lewis acid?

• Donates a proton

• Accepts a pair of electrons

• Releases hydroxide ions

• Forms hydrogen bonds

Which of the following is a characteristic of resonance structures?

• They represent different compounds

• They show different arrangements of atoms

• They are different ways of drawing the same compound

• They have different molecular formulas

What does the pH scale measure?

• Concentration of hydroxide ions

• Concentration of carbon dioxide

• Concentration of organic compounds

• Concentration of hydrogen ions

Which of the following is a Brønsted–Lowry acid?

• Sodium hydroxide (NaOH)

• Water (H2O)

• Hydrochloric acid (HCl)

• Ammonia (NH3)