Ions

What are valence electrons? (See p 9)

• The total number of electrons in an atom

• The number of electrons in the outermost shell

• The number of electrons in the second shell

• The number of protons in the outermost shell

This could be the dot diagram of (See p 12 and p 15)

• Ne

• Si

• Al

• Be

(See Valence E-Assignment)

• 2

• 8

• 3

• 13

How many valence electrons does carbon have? (See Valence E-Assignment)

• 4

• 5

• 6

• 7

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have? (See p. 9 & p.15)

• 31

• 5

• 15

• 4

How many valence electrons are found in atoms of group 1? (See p.9 & p.12)

• 7

• 6

• 4

• 1

How many valence electrons does Neon Have? (See p. 9 and p.12)

• 4 Valence electron

• 5 Valence electron

• 6 Valence electron

• 7 Valence electron

• 8 Valence electron

Everything is made up of little tiny things called _____ (See p. 6)

• compounds

• molecules

• atoms

• solids

Which subatomic particles contribute the most to the mass of an atom? (See p.6 & p.9)

• Protons, Neutrons, Electrons

• Protons only

• Protons and Electrons

• Protons and Neutrons

What charge does a proton have? (See p.6)

• negative (-)

• positive (+)

• neutral or no charge (0)