Chemistry Fall Final Review

Front

What electron configurations do atoms usually achieve by making covalent bonds?

Back

Noble gases' configurations.

Front

What does Hund's rule say about electrons?

Back

Electrons occupy orbitals that makes the number of electrons with the same spin direction as large as possible.

Front

How do isotopes of a given element differ?

Back

They differ in the number of neutrons.

Front

What is the formula for calculating percent error?

Back

Percent Error = |(Measured Value - True Value) / True Value| x 100%.

Front

What is the significance of Millikan's oil drop experiment?

Back

It determined the quantity of an electron's charge.

Front

Define covalent bond.

Back

A covalent bond is a chemical bond formed by the sharing of electron pairs between atoms.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are the outermost electrons and are involved in forming bonds with other atoms.