R: Parts of the Atom

the smallest unit of ordinary matter that forms a chemical

element is:

• atom

• element

• compound

• nucleus

a pure substance that cannot be broken down into

simpler substances by a chemical reaction is:

• atom

• element

• compound

• nucleus

the organized array of all the chemical elements in order of increasing atomic number is the:

• Groups

• Periodic Table

• Periods

• Elements

A 1-or 2- letter symbol that identifies the element is the:

• Atomic number

• Periodic Table

• Atomic Symbol

• Isotope

The 3 subatomic particles found in an atom are:

• Neutron

• Proton

• Photon

• Electron

Tags

NGSS.MS-PS1-1

The 2 subatomic particles found in the nucleus are:

• Neutron

• Proton

• Photon

• Electron

The subatomic particles that identifies an element is the:

• Neutron

• Proton

• Photon

• Electron

The subatomic particle that has a negative charge is the:

• Neutron

• Proton

• Photon

• Electron

The subatomic particle that has a positive charge is the:

• Neutron

• Proton

• Photon

• Electron

The center of the atom is called the:

• Core

• Atom

• Electron cloud

• Nucleus