The smallest particle of an element that retains its identity in a chemical reaction

Negatively charged subatomic particle located outside the nucleus

Positively charged subatomic particle located in the nucleus

Subatomic particle with no charge but with a mass equal to proton

The tiny central core of an atom composed of protons and neutrons

A Greek philosopher who was among the first to suggest the existence of atoms; believed they were indivisible and indestructible

An English chemist and schoolteacher who transformed Democritus ideas on atoms into a scientific theory by *using experimental methods*

What part of Dalton's atomic theory has been proved incorrect?

Discovered the electron

What type of device did Thomson use to discover the Electron?

Who carried out the Oil Drop experiment to find the quantity of an electron's charge?

Who discovered the Neutron?

What devices can be used to observe atoms?

Where is the mass of an atom located?

Unless otherwise stated, what is charge on an atom?

what is the charge of a nucleus?

what is the charge on an electron?

what is the charge of a proton?

what is the charge of a neutron?

who did the gold foil experiment?

what was Thomson's model of the atom called?

Who discovered the nucleus of the atom?

which subatomic particle occupies most of the space of an atom?