Share Periodic table
Save to Folder
Early chemists used the properties of elements to sort them into groups. True or False ?
True
The Story of the Father of Periodic Table.
Mendeleeve
Mendeleev arranged the elements in his periodic table in order of increasing atomic mass.
False, increasing atomic number.
Each period/row in the periodic table corresponds to a(n) ____.
principle level
There are ----------- rows, or periods, in the table
seven
There are ---------- main groups in the periodic table.
8
How is the modern periodic table organized?
increasing atomic number
Which of the following is metalloid ? Lithium , Silicon or helium ?
Silicon Si
Nitrogen is in Group 5 . How many valence electrons does it have ?
five
What is the name of the element that is in the 3rd period and group 4 _____________?
silicon Si
What is the name of the element that is in the 4th row and group 3_____________?
Aluminum Al
Label the following element as a metal, non--‐metal, or metalloid. Oxygen
Non -Metal
Label the following element as a metal, non--‐metal, or metalloid “Na*
Metal
Mendeleev and other scientists were able to use the periodic table to predict the properties of undiscovered elements.
True
The elements in the same row in the periodic table have similar physical and chemical properties.
False , same group
What is the symbol for Potassium ?
K
