Science Quiz 4-03-17
J.J Thomson's atomic model was known as the "______ ___ _____." (Blueberry Muffin)
"raisin bun model."
What was Dalton's Atomic Theory?
1. Atoms are tiny, invisible particles. 2. Atoms of one element are all the same 3. Atoms of different elements are different 4.Compounds form by combining atoms
The ______ _____ has changed over time.
Atomic model
As scientists have learned more and more about atoms, the atomic model has _______.
Changed
The new atomic model has electrons moving around nucleus in a _____.
Cloud
For over two centuries, scientists have created _________ ______ of the atom.
Different models
J.J Thomson discovered _________.
Electrons
Niels Bohr proposed that _________ move around the nucleus in specific layers, or ______/_______/_____ ______.
Electrons, shells/orbits/energy levels
Democritus was a _____ ___________ who was the father of ______ atomic thought.
Greek Philosopher , modern.
Rutherford showed that atoms have (+) particles in the center. and are ______ _____ _____.
Mostly empty space
Democritus proposed that matter could ___ __ _______ into smaller pieces forever.
NOT be divided
Chadwick called there particles ________.
Neutrons
Chadwick discovered _______.
Neutrons
Rutherford called the center of the atoms the _______.
Nucleus
J.J Thomson also proposed the existence of a (+) _______.
Particle
Rutherford called these (+) particles _______.
Protons
Niels Bohr improved on _________'_ model.
Rutherford's
Dalton was an English ______ _______ who preformed many experiments on atoms.
School Teacher
John Dalton created the very first ______ ______.
atomic theory
Democritus claimed that matter was made of small., hard particles he called "_____."
atoms
Work done since 1920 has ________ the model.
changed
Atoms are made mostly out of (+) _______ _________. (the dough)
charged materials
It is impossible to know where an ________ is at any given time.
electron
Every atom has a specific number of ________ shells.
electrons
The (-) charged _________ (the raisins) are found inside the (+) dough.
electrons
J.J Thomson was the first scientist to shoe that the atom was made of ____ _______ ______.
even smaller things
Working with Rutherford, Chadwick discovered particles with __ ______.
no charge
Neutrons are found in the _______.
nucleus
Rutherford discovered _______ and the _______.
protons and nucleus
Dalton viewed atoms as ____, _____ _____.
tiny, solid balls