Scheduled maintenance: Saturday, March 6 from 3–4 PM PST
Upgrade to remove ads
Only $2.99/month

Atoms & Ions

Terms in this set (33)

element
Atoms with the same number of protons are the same
protons, neutrons, electrons
Atoms are made of what three subatomic particles?
protons and neutrons
What particles are found in the nucleus of an atom?
electrons
What particle is found in orbitals around the nucleus of atoms?
positive
In terms of charge, protons are
negative
In terms of charge, electrons are
neutral
In terms of charge, neutrons are
Democritus
The ancient Greek philosopher __________ came up with the idea of atoms (atomos).
atom
The smallest particle of an element that retains the properties of that element is called a (an)
John Dalton
The first modern theory about the existence of atoms as the basic building block of matter was developed by
carbon
Coal is mostly made of
strong nuclear force
The four fundamental forces of nature are gravity, electromagnetism, the weak nuclear force and the
strong nuclear force
The fundamental force that holds the nuclei of atoms together is the
nuclei
Nucleus is singular, __________ is plural
waves
It is more accurate to think of electrons as being both particles and
energy levels
Electron orbitals (shells) represent different __________
least energy
The electron orbital closest to the nucleus is the one with the
a photon
When an electron absorbs energy in the form of __________, it jumps to a higher energy orbital.
a photon
When an electron drops to a lower energy orbital, it emits
protons
On the periodic table, atoms are organized by their atomic number, which is really their number of __________.
periodic table
On the __________, atoms are organized by their atomic number, which is really their number of protons
atomic number
On the periodic table, atoms are organized by their __________, which is really their number of protons
protons and neutrons
An atom's atomic mass is calculated by adding its number of
isotopes
An element's __________ have the same number of protons, but a different number of neutrons.
isotopes
The atomic mass listed for elements on the periodic table represent a weighted average of the element's different
molecules
Atoms can bond together to make
quarks
Each proton and neutron is made of three
gluons
Quarks are held together in protons and neutrons by
Manhattan Project
The __________ was the secret American program to develop the atomic bomb during World War 2.
J. Robert Oppenheimer
As director of the Los Alamos Laboratory, __________ led the team that developed the atomic bomb.
J. Robert Oppenheimer
Who is sometimes known as the "father of the atomic bomb?"
fission
The first atomic worked by splitting heavy radioactive atoms in a process known as
fusion
The process that powers stars by combining lighter atoms into heavier atoms is a process known as
YOU MIGHT ALSO LIKE...