Atoms Physical Science Review

Front

What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common?

Back

They each contributed to the development of the atomic theory.

Front

all matter is made of what

Back

atoms

Front

The positive particles of an atom are

Back

protons

Front

the central region of an atom where its neutrons and protons are is its

Back

nucleus

Front

True or False? Neutrons have a negative charge

Back

False

Front

Element or compound?
O₂

Back

Element

Front

What is at the center of every atom?

Back

nucleus, neutron, proton

Front

An atom is neutral if...

Back

The number of protons = electrons

Front

The smallest common particle in the atom...

Back

electron

Front

Neutrons are important because...

Back

They hold the nucleus together.