Chemistry - Fall 2023 Final Exam

Front

What type of bond is holding the atoms together in a nonpolar covalent bond?

Back

A nonpolar covalent bond is formed when two atoms share electrons equally, resulting in no charge separation.

Front

What is the correct chemical name for the ionic compound CuS?

Back

The correct chemical name is copper (II) sulfide.

Front

What is an example of an intensive property?

Back

Density is an example of an intensive property, as it does not depend on the amount of substance.

Front

What is the center of an atom called?

Back

The center of an atom is called the nucleus.

Front

What is the atomic mass of carbon?

Back

The atomic mass of carbon is 12.0107.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms, leading to a partial positive and negative charge.

Front

Define ionic bond.

Back

An ionic bond is a chemical bond formed between two ions with opposite charges, typically between a metal and a nonmetal.

Front

What is the difference between an intensive and extensive property?

Back

Intensive properties do not depend on the amount of substance (e.g., density), while extensive properties do (e.g., mass, volume).

Front

What is the role of protons in an atom?

Back

Protons are positively charged particles found in the nucleus of an atom and determine the atomic number and identity of the element.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom and defines the element.