Atomic History
The father of the periodic table
Who is Mendeleev?
This equation equals the atomic mass of an atom
What is number of protons + number of neutrons?
The subatomic particles with a positive charge
What are protons?
These kinds of elements have properties of both metals and nonmetals
What are metalloids?
The periodic table is mainly organized by this value
What is atomic number?
Water, earth, fire, and air are NOT examples of this (although ancient civilizations thought they were)
What are elements?
An element with 67 protons will have this atomic number
What is 67?
The subatomic particles with no charge
What are neutrons?
This family of elements do not react with any other elements, so they are called "inert"
What are noble gases?
Elements in the same _______ tend to have similar properties
What is column? (or family)
This lab was responsible for the discovery of 16 elements, including neptunium, plutonium, and einsteinium
What is the Lawrence Berkeley Lab?
An element with 32 protons and 35 neutrons will have this atomic mass
What is 67?
The only subatomic particles that are NOT located in the nucleus
What are electrons?
This family of elements are highly reactive with water, shiny, and malleable
What are alkali metals?
Atomic mass increases as you move ____ and ____ on the periodic table
What is right and down?
In the search for gold, Hennig Brand accidentally discovered this element by boiling his urine
What is phosphorus?
A neutral atom with 41 electrons will have this atomic number
What is 41?
The subatomic particles that determine an atom's identity (which element it is)
What are protons?
Daily Double: These two families of elements appear in separate rows below the rest of the table
What are lanthanides and actinides?
The periodic table has this number of elements (currently)
What is 118?
This scientist pioneered the theory that atoms are mostly made of empty space with a tiny nucleus at the center
Who is Rutherford?
An oxygen atom with an atomic mass of 15 will have this number of neutrons
What is 7?
The subatomic particles that determine an element's reactivity
What are electrons?
This family of elements are the most reactive nonmetals
What are halogens?
Elements in the same column have the same number of this
What are valence electrons? (or electrons in the outermost shell)