The Smallest Unit of Matter.
What is an Atom?
The Table or Chart That Arranges The Elements.
What is the Periodic Table?
The Chemical Symbol of Helium.
What is "He"?
A Positively Charged Particle Found Inside of An Atom.
What are Protons?
The Abbreviation For The Element's Name.
What is the Chemical Symbol?
What is 36?
A Negatively Charged Particle Found Inside of An Atom?
What are Electrons?
The Horizontal Row on the Periodic Table.
What is a Period?
The Elements in Group 10.
What is Nickel, Palladium, Platinum, or Darmstadtium?
Neutral or Uncharged Particles Found Inside of An Atom.
What is a Neutron?
The Vertical Column on a Periodic Table.
What is a Group?
The Atomic Mass of The Element Barium.
What is 137.327?
The Center of An Atom (Proton and Neutrons).
What is the Nucleus?
The Number at the Top of Elements Square.
What is the Atomic Number?
The Scientists That Proposed a System to Organize The Elements.
Who is Dmitri Mendeleev?