Atomic Structure Quiz

What is an atom?

• A type of molecule

• The smallest indivisible unit of matter and the most basic building block of an element

• A type of chemical bond

• A subatomic particle

What is at the center of an atom?

• Electrons

• Molecules

• A nucleus

• Chemical bonds

What particles make up the nucleus of an atom?

• Electrons and protons

• Neutrons and electrons

• Protons and neutrons

• Protons, neutrons, and electrons

Which subatomic particle has a positive electrical charge?

• Neutron

• Electron

• Proton

• Molecule

What is the charge of a neutron?

• Positive

• Negative

• No charge

• Variable charge

What can electrons do unlike neutrons and protons?

• Orbit the nucleus

• Be shared with other atoms to form chemical bonds

• Make up the nucleus

• Have a positive charge

If an atom's nucleus were the size of a tennis ball, how tall would the shell of electrons that surround it be?

• As tall as a basketball hoop

• As tall as a human

• As tall as the Empire State Building

• As tall as a skyscraper

A diagram showing the structure of a carbon atom with protons, neutrons, and electrons labeled. How many electrons are in the outer ring and why?

How many elements are currently known, according to the text?

• 94

• 118

• 24

• 142

What does the atomic number of an element tell us?

• The number of neutrons in one atom of that element

• The number of electrons in one atom of that element

• The number of protons in one atom of that element

• The total number of subatomic particles in one atom of that element