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100

A way of Listing elements

Periodic Table

100

True or False

Some columns are skipped in order for elements with the same number of valence electrons to line up on the same columns.

True

100

 s a chemical element with the symbol Ne and atomic number 10. It is a noble gas.[10]    a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.  

 Neon

100

The periodic table was proposed by which Russian chemist

Dmitri Mendeleev

100

The only letter not in the periodic table is the letter

J

200

Elements are listed in the table by the structure of their

atoms

200

  When valence electrons are  line up on the same columns, the elements in the columns have similar ________

 properties.

200

For gold the "Au" comes from the Latin word for gold "aurum".

Gold

200

What is the most dangerous element on earth

Plutonium 

200

The elements located in Group IIA 

  • Beryllium (Be)Magnesium (Mg)
  • Calcium (Ca)
  • Strontium (Sr)
  • Barium (Ba)
  • Radium (Ra)

alkaline earths

300

From left to right and top to bottom, the elements are listed in the order of their

Atomic Number

300

Each horizontal row in the table is a ______

 period

300

The country Argentina is named after the which element  (symbol Ag) which is argentum in Latin

Silver

300

what is the  most abundant element in the Earth's crust

Oxygen

300

was the first element to be made artificially. It is the lightest element that has only radioactive isotopes (none are stable).

Technetium

400

atomic number, tells the number of  _________in each atom.

Protons

400

The first one is short and only has which two elements?  

 hydrogen and helium.

400

This  chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. I

Iron

400

The  rarest element on earth  is ______. There are probably no more than a few ounces of it on earth at any given time.

Francium

400
  • Found in column 1A of the periodic table. 
  • Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). 

Alkali Metals

500

It is called "periodic" because elements are lined up in_____________

Cycles or periods

500

There are _____  columns or groups and different groups have different properties.

18

500

s a chemical element with the symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials

Lead

500

How many Elements

118

500

the first scientific discovery of an element occurred in 1649 when Hennig Brand discovered  

phosphorous.