Atomic Theory Scientists

Front

Bohr's model of the atom proposed that ______.

Back

electrons move around the nucleus in levels.

Front

Who proposed the theory that atoms orbit the nucleus in specific orbits?

Back

Bohr.

Front

Where are electrons likely to be found according to our Modern Day Theory?

Back

electron cloud.

Front

J.J. Thomson provided evidence that an atom...

Back

contains negatively charged particles.

Front

Which of the following scientists discovered the current model of the atom?

Back

Schrodinger & Heisenberg.

Front

What is the basic unit of matter?

Back

Atom.

Front

What did Democritus contribute to atomic theory?

Back

He proposed that matter is made up of small, indivisible particles called atoms.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

That atoms have a small, dense nucleus.