Atom Basics

Basic building block of matter

• atom

• molecule

• element

• cell

Tags

NGSS.MS-PS1-1

Subatomic particles include which of the following? Choose all that apply.

• protons

• neutrons

• nucleus

• electrons

Which are true of the nucleus?

• center of the atom

• very dense

• contains protons and neutrons

• contains electrons and protons

• contains only protons

Tags

NGSS.HS-PS1-8

Subatomic particle located in nucleus with positive charge, 1 amu of mass

• electron

• proton

• neutron

• ion

Subatomic particle located in nucleus with neutral charge and 1 amu mass

• electron

• proton

• isotope

• neutron

Area outside (surrounding) the nucleus of atom

• energy levels

• orbit

• proton cloud

• nucelus

Subatomic particle outside nucleus with negative charge and 1/2000 amu of mass

• electron

• ion

• proton

• neutron

Tags

NGSS.MS-PS2-3

Subatomic particle that gives an atom its identity (ID number)

• proton

• neutron

• quark

• electron

The amount of protons and neutrons in the nucleus

• atomic number

• atomic mass number

• atomic mass unit

The number of protons found in an atom

• atomic number

• atomic mass unit

• atomic mass number