Atomic Structure Quiz

Atoms of the same element must always have the same number of

• Electrons

• Isotopes

• Neutrons

• Protons

The dense, positively charged mass located in the center of the atom

• Nucleus

• Proton

• Isotope

• Molecule

The _______ of an elements equals the number of protons in an atom of that element

• Mass Number

• Atomic Number

• Atomic Weight

• Isotopes

Which atomic particle has a negative charge?

• None of the above

•  Electron

• Neutron

• Proton

The mass of this particle is so small that it is usually not included in the mass of an atom.

• proton
• electron
• neutron
• quark

What did Ernest Rutherford’s gold foil experiment demonstrate about atoms?

• Their positive charge is located in a small region that is called the nucleus.

• Their negative charge is located in small particles that are called electrons.

• Their nucleus makes up the majority of the volume of the atom.

• Their electrons are floating in a sea of positive charges.

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

What is the atomic mass number of this atom?

• 1

• 3

• 4

• 7

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

What does 9 represent on this periodic table square?

• 9 protons

• 9 neutrons

• atomic mass

• 9 elements