Element
a substance that cannot be broken down into a simpler substance.
Who was dimitri Mendeleev?
He was the Russian chemist and inventor that created and formulated the idea of a periodic table.
What element has the atomic number 12?
Magnesium
What model was created by the guy with Newton in his name?
Name all the Non metals in period 2.
Carbon, Oxygen, Nitrogen, Fluorine, Neon
Alkali Metal
Any of the elements lithium, sodium, potassium. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides.
Who invented the idea of the Lewis Dot Structure?
Gilbert Newton Lewis
What is the 7th element in period 3?
Chlorine
What is the full name of the inventor of the Bohr Model?
Rutherford Bohr
Name all the metals in period 3.
Metalloids
An element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
Who proposed the idea of the Bohr model?
Rutherford Bohr
What is the name of the non-metal in period 3 with 14 neutrons?
Silicon
How many elements did Mendeleev predict?
4
Is Iodine a metal or non metal?
Non metal
Halogens
Are reactive nonmetallic elements that form strongly acidic compounds with hydrogen from which simple salts can be made.
Who created the octet rule?
Richard Abegg
What element is dangerous and can be found in water?
Lead
Name a lanthanide element.
Lanthanum, Cerium , Praseodymium , Neodymium , Prometheium, Samarium , Europium , Gadolinium, Terbium , Dysprosium , Holmium , Erbium , Thulium , Ytterbium , or Lutetium
Is the 17 element a metal or non metal?
Non metal
Lanthanides
Any of the series of fifteen metallic elements from lanthanum to lutetium in the periodic table.
Who rearranged the periodic table?
Henry Mosley
Arsenic