A
The unique features of Mendeleev's classification method is that he...
What is left blank spaces for elements yet to be discovered.
This scientist first recognized groups of 3 elements with similar properties.
Who is Johann Dobereiner?
The modern periodic table arranges elements according to...
The element's atomic numbers
Please arrange these elements from greatest electronegativity to least...carbon-6, fluorine-9, lithium-3, nitrogen-7.
What is fluorine, nitrogen, carbon, lithium?
True or False...Ancient Greeks thought that all matter in the universe was made of only 5 elements.
What is true?
True or False...a family is the same as a period on the periodic table.
False
Using a periodic table, which of the following elements has the greatest electronegativity:Beryllium-4, fluorine-9, or rubidium-37?
What is fluorine-9?
Which family consists of elements in group 1?
What is alkali metals?
Elements in the same ___________ on the periodic table have the same number of valence electrons.
How many valence electrons does Silicon (Group 14) have?
What is 4?
Where are non-metals found on the periodic table?
What is to the right of the heavy step stair line?
This scientist demonstrated that fire requires oxygen...
Who is Antoine Lavoisier?
Which of the following has the largest atomic radius? Sodium-11, Argon-18, Cesium-55, or Radon-86?
What is Cesium?
How many valence electrons do the alkaline-earth metals have?
What is 2?
Uranium, found below the main body of the periodic table, is best classified as a(n)...
What is an inner-transitional metal?
Refer to the periodic table. What is the family name for the group containing chlorine?
What is halogens?
Referring to a periodic table, classify arsenic as a metal, non-metal or metalloid.
What is a metalloid?
These are highly conductive and reactive...metals, non-metals or metalloids?
What are metals?
These possess 4-8 valence electrons, are they metals, metalloids or non-metals?
What are non-metals?
Why is the nitrogen group considered a mixed group?
What is, it contains, metals, non-metals and metalloids.
How would a highly conductive, malleable, and lustrous solid most likely be classified?
What is as a metal?
At room temperature, this sample is a dull, brittle solid with poor conductivity. Is this material a metal, non-metal or metalloid?
What is a non-metal?
Please come to the board and write the correct electron dot notation for Calcium.
Ca with 2 dots on the East
This includes almost 80% of the elements...metals, non-metals or metalloids?
What are metals?
What 2 things effect the size of an element's atomic radius?
What is the number of energy levels and the addition of protons/electrons.
What are metalloids?
This is the measure of an element's ability to attract and hold electrons when bonded to other atoms is called _____________.
What is electronegativity?
How does the atomic radius of elements change from left to right across the periodic table?
The atomic radius tends to get smaller from left to right across the periodic table, the strong attraction pulls the protons and electrons towards each other.
Please come to the board and draw the electron dot notation for Selenium.
Se with 2 dots east, 2 dots north, 1 dot west and 1 dot south.
This group that consists of groups 13-16 and contains metals, non-metals and metalloids are known as __________ groups?
What is mixed groups?