Isotopes and Ions

Notes for Page 23.

Atoms are identified by their # of protons.

• The # of protons DOES NOT change
• The # of neutrons CAN change
• The # of electrons CAN change

When the # of neutrons and electrons change the atomic structure/description also changes.

Isotopes

• Atoms of the SAME element with DIFFERENT atomic masses
• Occur when a change in neutrons occurs
• All elements have at least two naturally occurring elements

Two ways to write isotopes

1)

Ex.

2)

Ex.

Ions

• Atoms with a charge
• Occur when there is a change in # of electrons

Two types:

1) Cation - positively charged ion

2) Anion - negatively charged ion

Charge is written in the top right corner of the chemical symbol

Quizzes

Quiz #1 is a great quiz!

Quiz #2 is another great quiz!

Quiz #3 is a very basic matching quiz.

Quiz #4 is a really great quiz.

Worksheets

This is a great worksheet on the Subatomic Chart that includes Isotopes and Ions.

This is a great worksheet on atomic structure with isotopes and ions.