Semester I Final Exam Review

Front

What is the significance of elements in the same group of the Periodic Table?

Back

Elements in the same group have similar chemical properties due to having the same number of valence electrons.

Front

What characterizes covalent compounds?

Back

Covalent compounds generally exist as molecules and involve the sharing of electrons between atoms.

Front

What is the atomic number of an atom with 5 electrons?

Back

The atomic number is 5, which indicates the number of protons in the nucleus.

Front

What is the dominant intermolecular force in H₂?

Back

The dominant intermolecular force in H₂ is London dispersion forces.

Front

What are intermolecular forces?

Back

Intermolecular forces are forces of attraction between molecules, influencing physical properties like boiling points.

Front

Define covalent bond.

Back

A covalent bond is formed when two atoms share one or more pairs of electrons.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms, influencing its chemical properties.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve sharing electrons.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces arising from temporary dipoles in molecules.

Front

How do intermolecular forces affect boiling points?

Back

Stronger intermolecular forces result in higher boiling points due to increased energy required to separate molecules.