Valence Electrons and Protons

How many valence electrons does Helium Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

Tags

112.20.b.5.B

How many valence electrons does Silicon Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

Tags

112.20.b.5.B

How many valence electrons does Lithium Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

Tags

112.20.b.5.B

How many valence electrons does sodium have?

• 1

• 2

• 3

• 4

Tags

112.20.b.5.B

Elements in the same column of the periodic table always have the same # of _______ as one another.

• Protons

• Neutrons

• Electrons

• Valence Electrons

Tags

112.20.b.5.B

How many valence electrons are in an atom of Ba?

• 2

• 8

• 4

• 1

Tags

112.20.b.5.B

Particles in an atom that are positively charged

• neutron

• proton

• atom

• electron

Tags

112.20.b.5.B

particles in an atom that are negatively charge

• electron

• proton

• neutron

• nucleus

Tags

112.20.b.5.B

When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

• The total number of neutrons in the unknown element

• The total number of particles in the nucleus of the unknown element

• The number of protons in the nucleus of the unknown element

• The number of valence electrons in the unknown element

What part of the atom determines the chemical properties or reactivity?

• Protons

• Electrons

• Valence Electrons

• Energy levels

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2