Periodic Table
This number tells you the number of protons and electrons.
What is Atomic Number?
This part of the atom is the center of the atom.
What is the nucleus?
This element is the first element.
What is hydrogen?
This transition element is a good conductor of electricity and is used in wiring.
What is copper?
This many electrons fit on the first energy level.
What is 2?
Subtracting the atomic number from the atomic mass gives you the number of this subatomic particle.
What is number of neutrons?
This particle has a positive charge.
What is proton?
This element is number 7 on the Periodic Table.
What is nitrogen?
This element has 17 protons.
What is chlorine?
This many electrons fit on the second energy level.
What is 8?
Adding the number of neutrons and the number of protons together gives you this number.
What is an element's atomic mass?
This particle has no charge.
What is neutron?
This element is the 11th element.
What is sodium?
This element's symbol is K.
What is potassium?
This many electrons fit on the third energy level.
What is 18?
There are this many liquid elements at room temperature on the periodic table.
What is 2?
This particle has a negative charge.
What is electron?
This element has an atomic number of 20.
What is Calcium?
This scientist known as the Father of the Periodic Table (full name).
Who is Dimitri Mendeleev?
This element has only one energy level and two electrons in that energy level.
What is helium?
The number of electrons in an element's outermost shell is the definition for this term.
What is 'valence electrons'?
This subatomic particle is not inside the nucleus.
What is electron?
This element is the second of the noble gasses.
What is neon?
This "other metal" has such a low melting point that it can melt in a person's hand.
What is gallium?
This model is the current atomic model.
What is the electron cloud model?