Review of Parts of an Atom

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.MS-PS1-1

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

B and C are found in the ______ of an atom.

• Energy levels
• Space
• Nucleus
• Outside

Tags

NGSS.MS-PS1-1

What subatomic particle(s) would be found orbiting the nucleus?

• Neutrons only
• Electrons only
• Protons and Neutrons
• Protons and Electrons

Tags

NGSS.MS-PS1-1

• 2
• 8
• 3
• 13

Tags

NGSS.MS-PS1-1

Valence electrons are the...

• Innermost electrons
• Middle electrons
• Outermost electrons
• Any electrons

How many valence electrons are found in atoms of group 14?

• 4
• 3
• 14
• 16

The period that an element is in, tells you what?

• Number of protons

• Number of electrons

• Number of valence electrons

• Number of shells

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

• 1

• 2

• 3

• 4