Atoms Vocab Flashcards
What is an atom?
The smallest unit of an element
What is an element?
A substance that stays the same when broken down, under normal circumstances
What are the subatomic particles found in an atom?
Protons, Neutrons, and Electrons
What is a proton?
A positively charged subatomic particle.
What is a neutron?
A subatomic particle with no electrical charge.
What is a electron?
A negatively charged subatomic particle.
Where are protons and neutrons located in an atom?
Both subatomic particles can be found in the nucleus of the atom.
Where are electrons located?
Electrons are found orbiting the nuclues in energy levels.
What are energy levels?
They are certain areas where you can find electrons in an atom.
What two subatomic particles have roughly the same mass?
Protons and Neutrons.
What are valence electrons?
They are the electrons found in the last energy level of the atom. They are used to help bond compounds.
What is an atomic number?
The number of protons in an atom.
What is an atomic mass?
The number of protons and neutrons in the nucleus combined.
What is the periodic table?
A table listing all the elements found to this day.
What is a bohr model?
A model used to predict the reactivity of an element.
