Atomic Structure

The smallest unit of matter; the building blocks of molecules.

• mass

• atom

• element

• compound

Tags

NGSS.MS-PS1-1

The positively charged central core of an atom that contains nearly all the atom's mass is the

• nebula

• epicenter

• nucleus

• heart

Subunit of an atom with a negative charge (-) and located in orbit surrounding the nucleus of an atom.

• proton

• neutron

• element

• electron

Subunit of an atom that has a positive charge (+) and located in the nucleus of an atom.

• proton

• neutron

• electron

• megatron

Subunit of an atom that has a neutral charge (Ø) and located in the nucleus of an atom.

• proton

• neutron

• electron

• molecule

Label the parts of the atom.

The subatomic particle labeled "a" is the ​ ​ (a)  

The subatomic particle labeled "b" is the ​ (b)  

The subatomic particle labeled "c" is the ​ (c)   .

​

• electron
• neutron
• proton

Tags

NGSS.MS-PS1-1

What is the term for the region around the nucleus where electrons are likely to be found?

• electron cloud

• electron field

• electron zone

• electron shell