Atoms and the Atomic Theory

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

subatomic particles found on the outermost shell & responsible for the atom's reactivity

• neutrons
• valence electrons
• isotopes
• ions

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

Tags

NGSS.HS-PS1-8

Value representing the number of protons in an element

• Atomic Mass
• Mass Number
• Valence Electrons
• Atomic Number

Tags

NGSS.HS-PS1-7

Subatomic particles that are neutral in charge

• Neutrons
• Protons
• Nucleus 
• Electrons

Atoms of the same element with a different number of neutrons

• Ion
• Gluons
• Isotope
• Quarks

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-8

A charged atom

• Ion
• Isotope
• Electron Cloud
• Quark

The smallest particle of an element that shows all the properties of that element.

• Subatomic Particles
• Atom
• Quarks
• Gluons

Where electrons are likely to be found as they travel around the nucleus

• Nucleus
• Electron Cloud
• Within a Proton
• Within a Neutron