Atomic Sturcture

Atoms of the same element that have a different number of neutrons are called?

What charge do protons have?

What force holds the nucleus together and keeps it from flying apart?

Positively charged particle that exist in the nucleus of an atom.

Using the picture, what is do the black spheres represent?

Center of an atom contains most of the atom’s mass.

Using the diagram, what element is represented? (red spheres=protons)

An atom is...

An electron _______ another electron.

What on the periodic table gives us the number of protons an element has?

How many protons does this element have?

Scientist proposed that the center of an atom was more dense and contained the mass of the atom

The number of __________ determines the element.

How many neutrons does this element have. (Round mass to nearest whole number)

What charge do electrons have?

This image represents an ___________.

All matter is made up of _______?

Which subatomic particle circles around the nucleus in orbitals?

What are the three subatomic particles?

This philosopher named atoms after the Greek word atomos, which means invisible.

The atomic mass gives us the number of ________ plus __________ .

Using the picture, if the red spheres are protons, what are the blue spheres?

Do neutrons attract or repel anything?

What subatomic particles are located in the nucleus?

What is the name of this element?

Joseph Jon Thomson is credited with finding the _________.

Particle with no charge that exists in the nucleus of most atoms.

How many subatomic particles are there?

What charge do neutrons have?

An electron and proton ________ one another.

How many protons does this element have?

Would this atomic structure represent an isotope of Lithium (Li)?

This scientist has a theory named after him.

Tiny bits of matter that are the building blocks of an atom.