January 4 ESL Chemistry

Welcome Back!

We hope you had a wonderful winter break!

Today's Agenda

• Today we are reviewing the material we learned in December.

• Let's see how much you remember :-)

Ions

• Ions are formed when atoms gain or lose electrons.

• Atoms that GAIN electrons are called ANIONS and are negatively charged.

• Atoms that LOSE electrons are called CATIONS and are positively charged.

Multiple Choice

Fill in the Blank.

Potassium is in column 1 of the periodic table. This element will lose an electron. That makes a potassium ion a __________

• cation

• anion

• neutral atom

Multiple Choice

To form an ion with a negative three charge (-3) an atom must ________ electrons.

• lose 3

• lose 2

• gain 3

Multiple Choice

When an atom loses an electron, it becomes a:

• cation which is positively charged

• cation which is negatively charged

• anion which is positively charged

Multiple Choice

Which types of elements form cations?

• metals

• nonmetals

• metalloids

Lewis Dot Structure

• When drawing Lewis Dot Structure of atoms, every dot represents a valence electron.

Multiple Choice

What is a valence electron?

• electrons in the second energy level

• electrons in the outermost energy level

• the atomic number of an atom

Multiple Choice

How many valence electrons are shown in the Lewis Dot Model of Oxygen?

• 4

• 6

• 7

Multiple Choice

This is a correct dot diagram for neon (Ne)

• true

• false

Multiple Choice

This is a correct dot diagram for carbon (C)

• true

• false

Multiple Choice

How many electrons should Lithium have around its Lewis dot model?

• 1

• 2

• 3

Multiple Select

How did you do today? (Any answer is correct. You can choose more than 1 answer.)

• Great, I remembered a lot

• Good, the review helped me remember this information.

• Ok, I forgot a lot of this information.

• I am sooo tired and falling back asleep.