Atoms Vocabulary

The smallest unit of matter.

• molecule

• proton

• atom

• density

A positively charged subatomic particle. Found in the nucleus.

• neutron

• electron

• nucleus

• proton

Tags

NGSS.MS-PS1-1

Neutral sub-atomic particle with no electrical charge.

• proton

• neutron

• electron

• nucleus

Tags

NGSS.MS-PS1-1

A negatively charged subatomic particle. Found OUTSIDE of the nucleus, orbiting around it.

• proton

• neutron

• electron

• nucleus

The positively charged center of an atom. The nucleus contains protons and neutrons.

• neutron

• nucleus

• electron

• atom

Tags

NGSS.MS-PS1-1

The negatively charged space containing electrons that surrounds the atomic nucleus.

• atom

• atomic mass

• electron cloud

• nucleus

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

Tags

NGSS.HS-PS1-1

A vertical column is called...

• group
• tower
• period
• crew

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• center of an atom where protons and neutrons are found

• at the top of an element square

  
  

  equals number of protons

• outside of an atom where electrons are found

Tags

NGSS.MS-PS1-1

Mass Number

• smallest unit of an element

• at the bottom of an element square,equals number of protons and neutrons

• at the top of an element square,equals number of protons