Scientists
This scientist predicted the existence and properties of undiscovered elements.
Who is Dimitri Mendeleev?
This group of elements is the first group on the periodic table
What are the alkali metals?
These are the electrons found in the outermost shell of an atom.
What are valence electrons?
These subatomic particles have a positive charge and are found in the nucleus of an atom.
What is a proton?
This element is colorless, odorless, and the lightest gas in the periodic table. It is the most abundant element in the universe.
What is hydrogen?
This scientist demonstrated a connection between atomic mass and element's properties and arranged the elements in order of increasing atomic mass. His last name rhymes with "Flyer"
Who is Lothar Meyer?
This group is completely unreactive.
The number of valence electrons in this group is 8, except for helium.
What are the noble gasses?
The number of these subatomic particle determines the element's atomic number.
What are protons?
An alkali metal known for being the lightest solid element. It is used in batteries, particularly in smartphones.
What is lithium?
This scientist is credited with the modern day periodic table.
Who is Dimitri Mendeleev?
This group makes a stair step pattern on the periodic table, and act somewhat like metals, and somewhat like nonmetals.
What are the metalloids?
This rule states that atoms are most stable when they have 8 valence electrons?
What is the octet rule?
These negatively charged particles orbit the nucleus.
What are electrons?
This element is a metal that is commonly used in construction and is highly resistant to corrosion. It is a popular material for pipes and coins.
What is copper?
This scientist arranged elements in order of increasing atomic NUMBER
Who is Henry Moseley?
This group has variable oxidation states of valence electrons.
What are the transition metals?
This rule states that Hydrogen and Helium are most stable with 2 valence electrons.
What is the duet rule?
The number of these particles is equal to the number of protons in a neutral atom.
What are electrons?
This noble gas is used in light bulbs and provides an atmosphere to prevent filament burning. It's atomic mass is less than Krypton, and the atomic number is greater than neon.
What is argon?
This scientist created the law of octaves.
Who is John Newlands?
These two families are often left out of the general periodic table and exist at the very bottom. We do not study them very often.
Elements in this group have valence electrons that are variable in number.
What are the transition metals?
What are protons and electrons?
This halogen is used in bleaches and disinfectants and is the most reactive element of the halogens.
What is fluorine?