Physical Science Test 3

Developed the nuclear model

Aritstole first called particles atomos, from which we get our word atom.

The earliest record of a particle theory of matter is from the

discovered electrons using crookes tubes

Quantum mechanics is a branch of physics that deals with

Most of an atom consists of empty space.

JJ Thompson discovered the existance of the

Isotopes of an element always have the same number of protons

the number of protons found in the nucleus of a given element

Which of the following is a weighted average?

What is the currently accepted model of the atom?

In Rutherfords experiments, a beam of ________________ was directed a piece of gold foil.

which of the following scientists suggested that cathode rays were made of (-) charged particl

What is J.J. Thompson atomic model called?

Carbon-14 is different from carbon-12 in that it has a different number of ___________.

thoughts of indivisible " atomos"

"weighted average" means atomic mass

believed that electrons move through spherical regions located a fixed diance from the nucleus

Rutherford's gold foil experiments gave rise to which atomic model?

The Bohr model suggests that electrons move