Honors Chemistry Practice Midterm

Front

What are ions?

Back

Ions are atoms with a positive or negative charge.

Front

According to the octet rule, how many valence electrons do most elements need to be stable?

Back

Most elements need 8 valence electrons to be stable.

Front

Which type of compounds conducts electricity well when melted or dissolved?

Back

Ionic compounds conduct electricity well when melted or dissolved.

Front

What region of the periodic table contains atoms that form covalent bonds?

Back

The right side of the periodic table contains atoms that form covalent bonds.

Front

What does the atomic number represent?

Back

The atomic number represents the number of protons in the atom.

Front

What is the definition of atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes.

Front

What is a covalent bond?

Back

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

Front

What is the significance of the octet rule in chemistry?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving stability.

Front

What are the characteristics of ionic compounds?

Back

Ionic compounds typically have high melting and boiling points, and they conduct electricity when dissolved in water.

Front

What is the difference between an ionic bond and a covalent bond?

Back

An ionic bond is formed by the transfer of electrons from one atom to another, while a covalent bond is formed by the sharing of electrons.