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