Periodic Table

• Periods
• Groups

• Periods
• Groups

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

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

Tags

NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How are the elements in the periodic table arranged?

• by their atomic mass
• by their chemical symbol
• by their chemical name
• by their atomic number

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

• negatrons 
• electrons 
• neutrons 
• protons 

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

How many electrons does a Copper atom have?

• 63
• 29
• 92
• 34

Tags

NGSS.MS-PS1-1

How many neutrons are in a Gold atom?

• 79
• 196
• 118
• 275

Tags

NGSS.MS-PS1-1

What is the atomic mass equal to?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Tags

NGSS.HS-PS1-7