Unit 4 Review Regular Chem

Front

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

Back

8

Front

What is a covalent bond?

Back

A chemical bond where two atoms share valence electrons.

Front

What does a partial negative charge indicate in a molecule?

Back

It indicates that the atom has a slight excess of electrons.

Front

How many valence electrons do elements in Group 2 have?

Back

2

Front

Is this a correct dot diagram for fluorine (F)?

Back

True

Front

What is the octet rule?

Back

The principle that atoms tend to bond in such a way that they have eight electrons in their valence shell.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is a Lewis dot structure?

Back

A diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons.

Front

What does the symbol above an atom represent in a molecular structure?

Back

It can represent a charge, such as a partial negative or positive charge.