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First metalloid on the periodic table
What is Boron?
Elements in the same period share the same number of...
What are energy levels?
Most abundant element in our atmosphere
What is Nitrogen?
Most abundant element in our universe
What is Hydrogen?
The only letter that is not in the periodic table
What is J?
The group of metals that make different colors
What are the Transition Metals?
What are valence electrons?
An element used in finding the ages of organic materials
What is Carbon?
An element that is abundant in bananas
An element that can form up to 10 million different compounds
What is Carbon?
The # of electrons that fit on the third energy level
What are 18 electrons?
The trend of principle energy levels down a group
What is increasing?
The hardest substance on earth
What is Diamond?
An element that helps your bones grow
What is Calcium?
Inventor of the Periodic Table
Who is Dmitri Mendeleev?
The direction the periodic table is read to increase nonmetal properties
What is left to right?
The trend of atomic radius down a period
What is decreasing?
Stable & unreactive group of elements
What are the Noble Gases?
The most radioactive element
What is Radium?
The periodic table is organized in order of increasing...
What is Atomic #?
The direction the periodic table is read to increase metallic properties
What is right to left?
The trend of coulombic attraction down a period
What is increasing?
Characteristics of non-metals (5)
What is low conductivity, luster, & ductility, high electronegativity, and brittleness?
What are the Alkali Metals?
The rarest naturally-occurring element in Earth's crust
What is Astatine?