This subatomic particle always identifies the identity (name) of the element

• Neutron
• Electron
• Proton
• amu

The chart that shows the arrangement of elements in order by their atomic number

• Electron Cloud
• Periodic Table
• amu
• Atomic Mass

The sum of the protons and neutrons in the nucleus of an atom

• Atomic Number
• Compound
• Electrons
• Mass Number (also called Atomic Mass)

The majority of elements are classified as ________ and are located on the left side/middle of the periodic table.

• Metals
• Noble Gases
• Nonmetals
• Metalloids

The vertical columns on the periodic table #1-18

• Groups
• Periods
• Subatomic Particles
• Rows

A "pure" substance that cannot be separated or broken down into simpler substances

• Compound
• Mixture
• Period
• Element

Most of these elements are gases and are located on the right side of the periodic table

• Metalloids
• Compounds
• Nonmetals
• Metals

A substance composed of two or more elements chemically bonded together.  Examples are H₂O and CO₂.

• Element
• Compound
• Electron Cloud
• Metalloid

Tags

NGSS.MS-PS1-1

The horizontal rows on the periodic table #1-7.

• Periods
• Element
• Atomic Number
• Group

These elements are found along the zig-zag line on the periodic table.

• Metal
• Group
• Metalloid
• Nonmetal