Atomic Structure

The atomic number identifies the number of __________.

• electrons

• atoms

• protons

• neutrons

Subatomic particles that have a negative charge

• electrons

• protons

• quarks

• neutrons

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

These are found in the nucleus and have a neutral charge.

• proton

• electron

• neutron

Which particles are located in the nucleus? 

• Protons & Electrons 
• Electrons & Neutrons 
• Protons & Neutrons 

Which sub-atomic particles were determined to have charges? 

• Protons & Electrons 
• Electrons & Neutrons
• Protons & Neutrons

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

• 0

• 25

• 30

• 35

What is the overall charge of the nucleus?

• Positive
• Negative
• No Charge
• Both positive and negative

The smallest particle of an element that shows all the properties of that element.

• Subatomic Particles
• Atom
• Quarks
• Gluons

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

• Electron Shells
• Orbitals
• Electron Cloud
• Nucleus