Quiz (extra points)

Classify as an element, compound, or mixture:

Salt, NaCl

• Compound

• Mixture

• Element

Classify as an element, compound, or mixture:

Copper - Cu

• Mixture

• Element

• Compound

How many valence electrons are present in the following electron configuration:

1s² 2s² 2p⁶ 3s² 3p³ ?

• 6

• 15

• 5

Define an ion

• A positive element

• An electrically charged atom or group of atoms formed by the loss or gain of one or more electrons

• A negative element

Copper is a transition metal. An Ion of copper with a 2(+) charge will formed a negative or a positive ION?

• Negative

• Positive

• Neutral charge

Predict the charge:

As (Arsenic) has 5 valence electrons. What will its charge be?

• 3(-)

• 5(+)

• 8 (-)

Predict the charge:

Berilium (Be) has 2 valence electrons

• II

• 2(-)

• 2(+)

Elements with more than 5 valence electrons will most likely have a negative charge

• True

• False

A positive Ions is called:

• Cation

• Anion

• Valence electron

A negative Ion is called:

• Cation

• Anion