Atoms Review

-Positively-charged particles in nucleus

• Neutrons

• Protons

• Electrons

• Atom

The SI unit used to express the mass of particles in atoms

• Atomic Number

• Number of protons

• Atomic Mass Unit

• Number of electrons

-Neutral (no charge) particles in nucleus

• Neutrons

• Protons

• Electrons

• Molecule

Protons and neutrons, even though the nucleus has a very small volume

• The most massive particles in the atom

• Elements

• Atomic Number

• Gravitational Force

Tags

NGSS.MS-PS1-1

-Negatively -charged particles

• Electrons

• Neutrons

• Protons

• Element

Tags

NGSS.MS-PS2-3

Are all atoms the same?

• Yes, they have the same number of protons, neutrons, and electrons

• No, atoms of different elements have a different number of protons, neutrons, and electrons

• Yes, they all weigh the same

The number of protons found in the nucleus of an atom

• Atomic Number

• Atomic Mass Unit

• Gravitational Force

• Bohr Model

Tags

NGSS.HS-PS1-7

-Shorthand way of writing the name of an element

• Atomic Mass Unit

• Atomic Number

• Atomic Symbol

• Periodic Table

-Weighted average of the masses of all the naturally-occurring isotopes of that element

-Sum of the protons and neutrons in an atom

• Atomic Mass Unit

• Atomic Number

• Atomic Symbol

• Element

Atomic Mass - Atomic Number

• Calculating the number of protons

• Calculating the number of electrons

• Calculating the number of neutrons