Intro to Chem
The major tool that is used in chemistry.
What is the Periodic Table of Elements?
This is the number of total elements currently on The Peirodic Table of Elements.
What is 118?
These elements are on far left group of The Periodic Table.
What are the alkali metals?
This famous scientist discovered radium and polonium, the latter named after her country of origin.
Who was Marie Curie?
He was a central figure in the development of the atomic theory of the universe until Aristotle took his thunder.
Who is Democritus?
This triatomic molecule, O3, is used to block out the sun's ultraviolet rays before hitting the Earth.
What is ozone?
These are the three major categories of elements on The Periodic Table.
What are metals, metalloids, and nonmetals?
In these categories, you would find several radioactive elements.
What are the lanthanides and the actinides?
These radioactive particles cannot penetrate skin or paper.
What are alpha particles?
This man propesed had three postulates about atomic theory 1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.
Who is John Dalton?
These are the two general categories of chemistry that we study primarily in high school.
What are inorganic and organic chemistry?
As we move to the right of The Periodic Table, this happens to the elements.
What is reactiviy decreases?
These elements include iodine and chlorine.
What are the halogens?
This subatomic particle is affected the most in radioactive decay.
What are neutrons?
This man, even though he is not reponsible for the modern periodic table, is the Russian scientist considered the father of the periodic table.
Who is Dimitri Mendeleev?
Chemistry is considered this type of science.
What is a physial science?
This is the number of naturally occuring elements on The Periodic Table.
What is 94?
All of these elements have fulfilled the octet rule and don't bond with other elements, thus making them the least reactive.
What are the noble gases?
These particle can penetrate stopped by a thin layer of clothing or aluminium.
What are beta particles?
He was the first to arrange the elements into a periodic table with increasing order of atomic masses.
Who was John Newlands?
These are the major element that help the human body function.
What are carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur (CHNOPS)?
This is the two categories of divisions when reading The Periodic Table.
What are groups and periods?
This consists of the bulk of the metals on The Periodic Table.
What are the transition metals?
These are the radioactive particles that are used during an x-ray.
What are gamma particles?
He arranged the elements in the periodic table according to atomic numbers, giving us the framework for the modern periodic table.
Who was Henry Moseley?