2nd Chem Benchmark Review

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They determine the physical properties of substances, such as boiling and melting points.

Front

Which substance is likely to have the strongest intermolecular forces?

Back

Substance B, as it has the highest boiling point and strongest intermolecular forces compared to the other substances.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. It influences how atoms interact in chemical bonds.

Front

What type of element typically has low electronegativity and forms compounds by transferring electrons?

Back

Metals, such as Strontium (Sr), typically have low electronegativity and tend to lose electrons to form positive ions.

Front

What is the significance of atomic radii in the periodic table?

Back

Atomic radii indicate the size of an atom. They generally increase down a group and decrease across a period due to changes in electron shielding and nuclear charge.

Front

Which elements are in the same group in the periodic table?

Back

Elements in the same group share similar chemical properties and have the same number of valence electrons. For example, Sodium (Na) and Potassium (K) are in Group 1.

Front

What is a Lewis dot diagram?

Back

A Lewis dot diagram is a representation of the valence electrons of an atom. It shows how many electrons are available for bonding.

Front

How many bonds can Fluorine form based on its Lewis dot diagram?

Back

Fluorine can form 1 bond, as it has 7 valence electrons and needs 1 more to achieve a full outer shell.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are the outermost electrons of an atom and are involved in forming bonds with other atoms. They determine the chemical reactivity of an element.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, resulting in charged ions, while covalent bonds involve the sharing of electrons between atoms.