PERIODIC TABLE SCAVENGER HUNT. 1. WHO IS THE MAN IN THE PICTURE? Dmitri Mendeleev Born Feb 8 th,...

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