U2L5 Review: Ionic Compounds

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

TRUE OR FALSE? Elements in the same group have the same number of valence electrons.

Back

True

Front

How do you find the number of valence electrons an element has?

Back

You look at the group number of the element in the periodic table.

Front

How many valence electrons does Chlorine (Cl) have?

Back

7

Front

Why do some atoms form negative ions?

Back

They gained electrons.

Front

How many valence electrons does Aluminum (Al) have?

Back

3

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.

Front

What is the charge of a sodium ion (Na+) after it loses an electron?

Back

+1

Front

What happens to the electrons in a covalent bond?

Back

In a covalent bond, electrons are shared between atoms.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.