Section 1
Who is the father of the periodic table?
Dmitri Mendeleev
About ______ % elements make up the periodic table
80
Where are the nonmetals located on the periodic table?
What does group number represent?
Valence electrons
What is Mr. Swason dog's name?
Milo
Elements with similar characteristics/properties are put into _____________
Groups/families
What's the difference between ductile and malleable?
Ductility is the ability for a metal to be stretched and shaped into a wire
Malleability is the ability for a metal to be bent and moved into a shape
What family is the most reactive out of the nonmetals?
Halogen family.
What does atomic number represent?
number of protons, if neutral charge, also number of electrons
Avengers
Protons (positive)
Neutrons (neutral)
Electrons (negative)
Alkali metals, have only one valence electron, meaning they want to form bonds with other elements to fill their outermost shell
What separates noble gases from the rest of the elements in the periodic table?
Noble gases do not form bonds with other elements because they already have 8 valence electrons and therefore are stable.
What does the staircase represent on the periodic table? What type of elements form this?
It separates metals (left) from nonmetals (right), the metalloids form the staircase as they are neither metals or nonmetals
Who is Miss. Hall bestie?
Mr. Adams
What are valence electrons? What makes them important?
Valence electrons are electrons in the outermost ring of an atom. They are important because they are what causes chemical reactions to occur
Why are Lanthanides and Actinides considered rare Earth metals?
relatively abundant but difficult to extract
Covalent bond- a bond in which elements share valence electrons
As you move left to right on the periodic table, what decreases? and why?
Reactivity decreases because the number of valence electrons increases. The more valence electrons, the more stable the element. (8 being the most stable/least reactive)
What is Mr. Woolford's favorite McDonalds breakfast item?
Sausage, egg, and cheese McGriddle
What are ions? What is a cation? What is an anion?
Ions are elements that have lost or gained an electron
Cations are ions that are positively charged
Anions are ions that are negatively charged
What are six properties of a metal?
Hard, Shiny, Malleable, Ductile, good Conductor, has Magnetism
What are the three characteristics of a nonmetal?
dull, brittle, poor conductors of heat and electricity
I'm thinking of an element, which is a nonmetal. It is in a reactive family. Its number of neutrons is 45. It can form diatomic bonds.
What family am I thinking about? What element am I thinking about? What are diatomic bonds?
Halogen family, Bromine, Diatomic bonds can form bonds with another atom of the same element.
What is the overall goal of elements?
To fill their outermost shell with electrons (8)