History
What did blank spaced on Mendeleev's periodic table represent?
Elements that were not yet discovered
Which type of metal (alkali, alkaline earth, or transition) are stable and unreactive in their pure form?
Transition
What is atomic radius?
The distance from the nucleus to the outermost electrons
Rank the following from lowest ionization energy to highest: Oxygen, sulfur, beryllium
Beryllium, sulfur, oxygen
What are the words used to describe positive and negative ions?
Cation and anion
Who created the first periodic table?
Mendeleev
Is aluminum a metal, nonmetal or metalloid
Which has the largest radius: Chromium, Bromine, Gold
Gold
An element that forms positive ions would have (high/low) ionization energy and (high/ low) electronegativity.
low ionization energy
low electronegativity
Define lustrous
shiny
Why is the periodic table "periodic"
Properties repeat
What type of element would most likely be ductile?
Metals
What is the trend in atomic radius going down a group, explain this.
Increases because of increasing shells
What is ionization energy? How does it impact the formation of ions?
Define valence electrons
Electrons located on the outermost ring (shell) of an atom.
Where was Marie Curie from?
Poland
What type of elements are considered good insulators?
Non-metals
What happens to the size of an atoms radius across a period, explain this using coulombs law
As magnitude of charge of the nucleus increases, size decreases because electrons are more attracted to the nuclues.
What is electronegativity? How does it impact the ability of an atom to form ions?
Electronegativity is how strongly an atom attracts new electrons.
The higher the electronegativity, the more likely an element can gain another electron (become negative)
What is an octet? Which elements have an octet?
8 valence electrons, noble gases
What property of matter did Marie Curie discover?
Radioactivity
Which element is the most reactive metal? Which is the most reactive nonmetal?
Organize the following from smallest to largest: Strontium, Oxygen, Rubidium
Oxygen, strontium, rubidium
An atom that would form negative ions would have (high/low) ionization energy and (high/ low) electronegativity.
High Electronegativity
Elements that have properties such as dull, good conductors, and brittle would be called ______________.
Metalloids