The Foundation
All matter is substance that has _____ and _____.
mass, volume
What we know about atoms we have _____ from thousands of experiments.
inferred
An electron weighs this many times less than a proton.
2000
In 1803 what did I publish?
The first fully scientific model of the atom.
Who is usually given credit for first imagining that matter is made of atoms; tiny, indivisible particles?
Democritus
Name the three basic things the universe is made of.
matter, energy, intelligence
These two subatomic particles reside in the nucleus.
protons and neutrons
Every electron has a very specific amount of _____ and they are arranged according to how much _____ they have.
energy, energy
Every atom of a given element is _____.
identical
In the Plum Pudding model, I suggested an atomic structure with a cloud of positively charged material embedded with thousands of negatively charged particles.
J.J. Thomson
All matter is made of _____.
atoms
The subatomic particle with a positive charge.
proton
Our current understanding of electrons places them in _____, or _____ buzzing around the nucleus.
orbitals, shells
What aspect of my model was not correct?
The notion that atoms are indivisible.
Our current model of the atom is called the _____ model. In it electrons are placed in _____ rather than orbits.
quantum, orbitals
This holds everything together and enables any process to happen.
I am the heaviest subatomic particle in an atom.
neutron
Electrons sometimes act like _____ and sometimes act like _____.
particles, waves
I proposed that atoms combine in what manner to form compounds?
whole-number ratios
Bohr's atomic model suggested these three important things.
1. electrons orbit the nucleus
2. the energy of an electron determines its orbit
3. only fixed energies are possible
_____ is the _____ from God or his creatures that makes things work in an orderly and beautiful way.
Intelligence, wisdom
Most of an atom is made up of _____ _____.
empty space
Atoms with a net charge are call this.
ions
During chemical reactions, atoms are not _____ or _____.
created, destroyed
Rutherford's atomic model made these three significant proposals.
1. a tiny nucleus containing the positive charge and almost all the mass
2. negative electrons surrounding the nucleus
3. most of the atom is empty space