Periodic table

all matter is made of what 

• energy 

• atoms 

• electrons 

• compounds 

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 

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

• negatrons 

• electrons 

• neutrons 

• protons 

True or False? Neutrons have a negative charge

• True

• False

What is the atomic number for an element with three protons?

• 2

• 1

• 3

• 6

A particle that moves around the nucleus is a(n)...

• Proton

• Neutron

• Electron

• Quark

In the modern periodic table elements are arranged by:

• atomic mass

• atomic number

• valence electrons

• number of isotopes

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

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

• negatrons 

• electrons 

• neutrons 

• protons