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

Tags

NGSS.HS-PS1-8

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

Tags

NGSS.HS-PS1-8

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

Discovered the electron within the atom

• Thomson
• Chadwick 
• Schrodinger & Heisenberg
• Dalton

an element will always have the same number of 

• neutrons
• protons
• isotopes
• atoms

An atom has 10 protons and a mass of 18. It has __ neutrons

• 10
• 18
• 28
• 8

Tags

NGSS.MS-PS1-1

The number 16 for the atomic element sulfur is the

• ionic number

• isotope

• atomic mass

• atomic number

Tags

NGSS.MS-PS1-1

The name of this particle means indivisible and it is the building block of matter

• molecule

• compound

• atom

• isotope

Tags

NGSS.MS-PS1-1