The second most reactive nonmetals are part this family.
What is Family 16 (Oxygen Family).
100
This old Russian dude with a sweet hairdo and beard came up with the first arrangement of elements that we now call the periodic table.
Who is Dimitri Mendeleev
100
Used in computer processing chips because they conduct electricity efficiently, but not heat.
What are metalloids.
100
If an atom loses an electron, it forms this.
What is a cation.
200
The most reactive nonmetals are called this.
What are halogens (Family 17).
200
The second most active metals are called this.
What alkaline-earth metals?
200
When the periodic table was first organized, it was arranged by ___________. But our modern periodic table is arranged by ____________.
What is atomic mass / atomic number
200
Silicon.
What is metalloid.
200
How, if given the atomic mass of an isotope (like Ca-41), can I determine the number of neutrons in each atom.
What is take the mass of the isotope and subtract the atomic number (number of protons).
300
The most reactive metals are called this.
What are Alkali metals (Family 1).
300
Families 3-12 are lumped together and known as this.
What are transition metals?
300
This word means that repeating properties of elements periodically with the atomic numbers of the elements.
What is periodic law?
300
Xenon
What is nonmetal.
300
What usually happens to isotopes over time?
What is they degrade into other elements.
400
Rubidium
What is Family 1?
400
This collection of elements are housed in Family 3 and the period that begins with Lanthanum. Used in modern electronics and magnets, they are known as this.
What are Rare Earth Elements.
400
Name three elements whose symbols look nothing like their chemical names.
Answers may vary, but may include Au, Ag, Na, Cu, Sn, etc.
400
Na
What is metal.
400
If I add an electron to a neutrally charged atom, I have this.
What is an anion.
500
Members of this family are likely to form salts with members of Family 1.
What is Family 17, Halogens.
500
This family needs three more electrons to form a full outermost shell, so we say their valence number is -3.
What is Nitrogen family (Family 15)
500
This is why the bottom number within each block of the periodic table is rarely a round number.
What is that isotopes in varying abundances exist for most elements.
500
Joe finds a pure element sample that is shiny. He says, "Duh, it 100% percent has to be a metal." Is he right?