Atoms
Center of atom
What is the nucleus?
Electrons found here
What are Energy Shells/Levels/Orbitals?
Chart that organizes all known elements
What is the Periodic Table of Elements?
Li
What is Lithium?
We share characteristics of both metals & nonmetals
What are metalloids?
positive charge
What is the charge of protons?
Second energy level's name
What is L?
Creator of the Periodic Table of Elements
Who is Dmitri Mendeleev?
s
What is Sulfur?
Only metal that is liquid at room temperature
Mercury
neutrons
What is the charge of a neutron?
What is two?
Columns on the periodic table
What are groups?
Symbol for Silver
What is Ag?
# of protons in Einsteinium
What is 99?
Charge of electrons
What is negative?
Maximum electrons in shell K
What is two?
Number found at the top of each element "square"; represents the # of protons in an element
What is the atomic number?
Symbol for Mercury
What is Hg?
Element found in period 4, group 5
What are protons & neutrons
32
What is the maximum # of electrons in shell N (4th)?
Group 8 on the Periodic Table; do not react well with other elements
What are Noble Gases?
W
What is Tungsten?
Name two of three elements in period 4 with magnetic properties
What are Iron, Cobalt and Nickel?