Ch. 8 Test Review: Covalent compounds and calculating molar gas

Front

What is the Lewis dot structure for CCl4?

Back

CCl4 has a central carbon atom bonded to four chlorine atoms, with no double bonds.

Front

How are the names of covalent compounds written?

Back

Using prefixes to indicate the number of each element present in the compound.

Front

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

Back

8 valence electrons.

Front

What is the mass of 0.500 L of argon (Ar) at STP?

Back

0.892 g Ar.

Front

Define a lone pair in chemistry.

Back

A lone pair is a pair of non-bonding electrons.

Front

What is a covalent bond?

Back

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

Front

What is the significance of the octet rule in covalent bonding?

Back

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

Front

What are molecular compounds?

Back

Molecular compounds are chemical compounds whose simplest units are molecules, formed by covalent bonds.

Front

What is the difference between a polar and nonpolar covalent bond?

Back

A polar covalent bond has unequal sharing of electrons, while a nonpolar covalent bond has equal sharing of electrons.

Front

How do you calculate the molar mass of a compound?

Back

Add the atomic masses of all the atoms in the compound's formula.