PERIODIC TABLE SCAVENGER HUNT
1. WHO IS THE MAN IN THE PICTURE?
•Dmitri Mendeleev•Born Feb 8th, 1834 in Russia•He was the YOUNGEST of 14
WHY IS HE IMPORTANT TO THE PERIODIC TABLE?
•He’s credited with being the creator of the 1st version
WHAT IS THE NAME OF THE OTHER MAN WHO WAS IMPORTANT IN DEVELOPING THE 1ST PERIODIC TABLES
•Lothar Meyer•Mendeleev published in 1869, Meyer in 1870
WHY WAS IT NECESSARY TO CREATE A PERIODIC TABLE?
•To organize elements
WHAT PROPERTY WAS MENDELEEV’S TABLE BASED ON?
• Increasing Atomic Mass
WHAT 2 PROPERTIES ARE THE MODERN PERIODIC TABLE BASED ON?
•Atomic #•Number of Protons
THE TABLE IS CALLED THE PERIODIC TABLE BECAUSE
•Happening at regular intervals
MENDELEEV’S TABLE WAS ARRANGED IN ROWS, CALLED
•periods
AND COLUMNS CALLED
•Groups (families)
ELEMENTS OF EACH _____HAVE SIMILAR PROPERTIES
•Group (family)
WHY DID MENDELEYEV LEAVE GAPS IN HIS PERIODIC TABLE?
•Kept pattern for the discovery of new elements
WHERE HIS PREDICTIONS CORRECT
•Some things didn’t match perfectly, since Mendeleev’s table was based on atomic mass
WHY ARE ELEMENTS PLACED IN SPECIFIC PLACES ON THE P.T?
•Elements that have similar physical properties are placed in the same group (family)
A ______________ IS A SET OF ELEMENTS THAT RUN FROM LEFT TO RIGHT
•Period
EVERY ELEMENT IN THE 1ST PERIOD HAS_____SHELL FOR ITS______.
•1shell for it’s electrons•Every element in the 2nd period has_____ shells for its•2 shells for it’s electrons•How many shells will the 3rd period have?•3 shells
EXAMPLE SHELLS
• Period 1 (1 shell)-Helium
• Period 2 (2 shells)Carbon
• Period 3 (3 shells)-Al
GROUPS ARE ______THAT RUN FROM TOP TO BOTTOM
•columns
THE ELEMENTS OF A GROUP HAVE THE SAME NUMBER 0F _____ IN
THEIR_____SHELL• Electrons• Outer• Example:H has 1e in outer shellLi has 1e in outer shellHow many e does Na have in outer shell?
Na: 1 electron
EVERY ELEMENT IN GROUP 1 HAS ______ ELECTRON IN ITS OUTER SHELL
• One• Every element in Group 2 has ________electrons in
its outer shell• Two• How many electrons will an element in the 7th
group have?• Seven
Valence electrons = Outer Shell e
THE ELEMENT THAT CAN ACT LIKE IT BELONGS TO 2 GROUPS IS________?
• Hydrogen• It has 1 electron• sometimes it wants to GIVE AWAY that 1
electron (like other members of GROUP 1)• Sometimes it wants to TAKE an electron
(like other members of GROUP 7)• It would have a complete shell if it would
either have 2 electrons or 0 electrons
THE ELEMENTS THAT HAVE FULL SHELLS ARE AT THE ______OF THE CHART
•Right•They are called_________________elements• Inert•Because they do/don’t ___________with other elements•Don’t react*• *Technically-given the right conditions they could
react. More appropriate to say “stable” at “normal” conditions