Chemistry Semester I Final Review

Front

What is the shape and polarity of NF₃?

Back

Trigonal pyramidal shape; polar molecule.

Front

Which group tends to GAIN electrons?

Back

Nonmetals.

Front

How many electrons does an s subshell hold?

Back

s subshell: 2, p subshell: 6, d subshell: 10, f subshell: 14.

Front

What is an isotope?

Back

An atom with a different number of neutrons.

Front

What is the 3D repeating pattern of positive and negative ions in an ionic compound called?

Back

Crystal lattice.

Front

What is the definition of a covalent bond?

Back

A chemical bond formed by the sharing of electrons 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 the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are involved in forming bonds between atoms.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict chemical behavior.