Chemistry Periodic Table Worksheets

Multiple Choice

Which of the following is the best description of an element?

• A substance that cannot be broken down into simpler substances.

• A naturally occurring mineral made of more than one substance.

• A small particle made with a specific chemical composition.

• A collection of atoms that have different abilities when joined together.

Multiple Choice

Which subatomic particles make up the atomic mass ? 

• protons and neutrons    

• Protons and electrons  

• Neutrons and electrons

• ions and neutrons

Multiple Choice

 What is the atomic number the same as? 

• number of protons

• number of electrons  

• number of ions

• number of neutrons

​1.Where are the subatomic particles found?

Multiple Choice

Which two particles have a mass equal to one atomic mass unit?

• protons and neutrons   

• neutrons and electrons  

• protons and electrons

• ions and neutrons

Multiple Choice

 Which subatomic particle has the smallest mass?

• protons    

• electrons  

• ions

• neutrons

Multiple Choice

 What particles are found in the nucleus of an atom? 

• protons and neutrons   

• neutrons and electrons  

• protons and electrons

• ions and neutrons

Open Ended

State the names of the three particles that make up an atom.

​Progress Check