Atomic structure

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus

Tags

NGSS.HS-PS1-8

Calculation used to find the number of neutrons in an atom

• Mass Number- Atomic Number

• Atomic Number - Mass Number

• Mass Number - Electrons

• protons = electrons = neutrons

How many neutrons does a sodium atom have? (Use the image to help you)

• 23
• 11
• 12
• 34

Tags

NGSS.MS-PS1-1

How many protons does this atom have?

• 2.5
• 6
• 5
• 10.811

Tags

NGSS.MS-PS1-1

What two particles make up the ATOMIC MASS of an element? 

• Protons and Neutrons
• Protons and Electrons
• Electrons and Nucleus
• Electrons and Neutrons

Tags

NGSS.MS-PS1-1

Which particle makes up the ATOMIC NUMBER of an element? 

• Protons
• Electrons
• Protons and Neutrons
• Neutrons

Tags

NGSS.MS-PS1-1

What charge is an proton? 

Tags

NGSS.MS-PS2-3

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

A vertical column is called...

• group
• tower
• period
• crew

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name