ACS CP Organic, Inorganic & Physical Chemistry

Question 1

Which element is common to all organic compounds?

Accepted Answer

Carbon

Answer

Organic compounds are defined as chemical compounds that contain carbon atoms, typically bonded to hydrogen atoms, and often to other elements like oxygen, nitrogen, or sulfur. Carbon's unique ability to form stable bonds with itself and other elements in diverse arrangements is the basis for the vast array of organic molecules.

Question 2

What type of bond is found in ionic compounds?

Accepted Answer

Ionic bond

Answer

An ionic bond is a type of chemical bond formed between two oppositely charged ions, typically a metal and a nonmetal. It results from the complete transfer of one or more valence electrons from one atom to another, creating a strong electrostatic attraction between the resulting cation (positive ion) and anion (negative ion).

Question 3

Which physical property measures a substance's resistance to flow?

Accepted Answer

Viscosity

Answer

Viscosity is a measure of a fluid's resistance to flow. It describes the internal friction within a fluid, where higher viscosity indicates a thicker, more resistant fluid (like honey), and lower viscosity indicates a thinner, more free-flowing fluid (like water). This property is crucial in many industrial and biological applications.

Question 4

Which reaction involves the exchange of ions between two compounds?

Accepted Answer

Double displacement reaction

Answer

A double displacement reaction, also known as a metathesis reaction, is a type of chemical reaction where the cations and anions of two different compounds switch places to form two new compounds. These reactions often occur in aqueous solutions and can result in the formation of a precipitate, a gas, or water.

Question 5

Which hydrocarbon contains only single bonds?

Accepted Answer

Alkane

Answer

Alkanes are saturated hydrocarbons, meaning they consist only of carbon and hydrogen atoms connected by single covalent bonds. Their general formula is CnH2n+2, and the absence of double or triple bonds makes them relatively unreactive compared to other hydrocarbons.

(ACS CP) American Chemical Society (ACS) Certified Professional Practice Test

(ACS CP) American Chemical Society (ACS) Certified Professional Practice Test

ACS CP Organic, Inorganic & Physical Chemistry