Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

What types of compounds do valence electrons react with?

Back

Valence electrons react with both ionic and covalent compounds.

Front

What type of bond do all molecules in a covalent compound share?

Back

Covalent bonds, where electrons are shared between atoms.

Front

What is a typical characteristic of ionic compounds?

Back

Ionic compounds typically have a high melting point.

Front

Which compound contains ionic bonds?

Back

Calcium oxide (CaO) contains ionic bonds.

Front

What is the charge of an atom in group 2 of the periodic table?

Back

The charge on an atom in group 2 is +2.

Front

What is an ionic bond?

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

What is the difference between polar and nonpolar covalent bonds?

Back

Polar covalent bonds occur when electrons are shared unequally, while nonpolar covalent bonds occur when electrons are shared equally.

Front

What is the solubility of ionic compounds in water?

Back

Many ionic compounds are soluble in water due to the interaction between the ions and water molecules.