Although not the only one to create a periodic table, he is the first person to publish one
Who is Demitri Mendeleev
100
Found in the outer energy level of an atoms, these determine the properties of elements.
What are valence electrons
100
The first group in the periodic table, all having a single valence electron
What are the alkali metals
100
Group 18 elements that are inert due to their s and p orbitals being filled.
What are noble gases
100
Having properties of both metals and nonmetals, semiconductors are often called this
What is a mettaloid
200
How the first published periodic table was organized
What is by increasing atomic mass
200
The location of elements in the periodic table is related to this
What is electron arrangement
200
Elements found in groups 3-12 whose valence electrons vary
What are the transition metals
200
Group 17 elements are salt formers and easily bond with alkali metals by gaining an electron to become -1 charged.
What are halogens
200
The characteristic that makes semiconductors ideal for use in electronics such as computers and cell phones
What is able to conductor electricity under certain conditions
300
He improved on the first published periodic table by arranging elements by increasing number of protons.
Who is Henry Moseley
300
These are elements that gain or lose electrons and become charges
What are ions
300
Found in group 2 on the periodic table, these metals are harder, denser and less reactive than group 1 metals.
What are the alkaline-earth metals
300
A characteristic of solid nonmetals that makes them crumbly.
What is brittle
300
This semiconductor forms sand by combining to oxygen and is often used in computer chips.
What is Silicon
400
Each column of the periodic table that share chemical properties
What are groups or families
400
An element that gains an electron and becomes negatively charged
What is an anion
400
This characteristic of metals allows them to be stretched into wires such are copper wire.
What is ductility
400
Found in group 17, it is the only nonmetal that is a liquid at room temperature.
What is Bromine
400
Although this element does not belong to the group it's in, it is the most abundant element in the universe and the only element to exist without a neutron.
What is Hydrogen
500
Each row of the periodic table.
What are periods
500
Elements in groups 1-14 that lose electrons and become positively charged.
What is a cation
500
These TWO characteristics make certain metals desirable to jewelers to be used in jewelry such as rings and necklaces
What is shiny and maleable
500
Being able to form up to four different bonds at once, it is the nonmetals upon which all living things are constructed.
What is Carbon
500
This element is not a semiconductor, but it exists on its own and is the only noble gas that doesn't have eight valence electrons