Introduction to Atoms

A proton and nuetron each have a mass of ____ amu

1

One proton is equal to the mass of ______ electrons.

183

The _____ ________ tells the number of protons in the nucleus of every atom of an element

Atomic number

How does Boh'r model of the atom differ from Thomson's model of the atom? How are they similar

Bobs model shows the real life object and discovered the atoms. They are the same because they are both break down the atoms.

A ____ is the particle of an atom that moves rapidly in the cloud like region around the nucleus

Electron

Scientists believe an atom is made of mostly ____

Empty space

Which two particles are found in an atom's nucleus?

Neutrons and electrons

The _____ is a very small, dense center of an atom.

Nucleus

A particle with no charge is a

Nuetron

Atoms of the same element that have the same number of protons by different number of neutrons are called ____

Number

The positively charged particle of an atom is called?

Proton

carbon-11 has this number of protons, electrons, and neutrons

Protons -6 Nuetrons - 7 Electrons - 8

What three particles make up an atom?

protons, neutrons, electrons