Elements
Periodic Table
Atoms
Extra
Extra
100
O
What is oxygen?
100
shorten things up
What is Atomic Symbol?
100
Smallest piece of an element
What is an Atom?
100
element with different amount of neutrons
What are Isotopes?
100
are neutral
What are atoms?
200
Hydrogen
What is H?
200
number of protons
What is Atomic Number?
200
small pieces that make up protons and neutrons
What are Quarks?
200
left of the starirsteps, except hydrogen
What are metals?
200
protons+neutrons
What is mass number?
300
Pb
What is Led?
300
elements are arranged by increasing atomic number and by changing in physical and chemical properties
What is the Periodic Table?
300
positive charge, nucleus (center of atom), mass= 1 amu (atomic mass unit)
What a proton?
300
Right of the stairstep
What are nonmetas?
300
each group have similar properties
What are elements?
400
Na
What is Sodium?
400
the vertical (up and down) columns in the periodic table numbered 1-18
What is are Groups?
400
no change, nucleus, mass= 1 amu
What is a Neutron?
400
stairsteps
What are Metalloids or Semimetals?
400
uses the symbol of the element and dots to represent the electrons in the outer energy level
What is the Electron dot diagram?
500
Ag
What is Sliver?
500
horizontal rows of elements on the periodic table
What are Periods?
500
negative charge, electron cloud, no mass
What is an Electron?
500
Created the periodic table
Who is Dmitry Mendeleev?
500
The elements in Group 18
What is nobel gases?
M
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