District 2 - The Periodic Table

Welcome to your training for how to take down District 2 when you are in the arena. Where would these other Districts, and the Capital for that matter, be without the Periodic Table? District 2 knows this advantage and will likely take advantage of it. They have a deep understanding of elements and how they work, so you are going to need to become an expert if you are going to take this District down once the Games begin.

They are advised by past champion Dmitri Mendeleev. It is rumored that he has gone crazy and this may be useful information once you are inside the arena..

Past District 2 Champions

  • Past champion Dmitri Mendeleev. He appears to have been slowly losing his mind over the last few years.

The Periodic Table of Elements

Please take out your District 2 guided notes and review the following content:

Periodic table and labelled groups

Elemental symbol info for Neon

An element is a substance that cannot be separated/broken down into simpler substances by chemical means. An element consists of only one type of atom

On the Periodic Table, we are told the following about every element:

  • Atomic Number - The number of protons in the nucleus of an atom. Atomic number is the same for all atoms of the same element.
  • Atomic Mass - The mass of an atom. Expressed in amu.
  • Element Name
  • Element Symbol

The Periodic Table is arranged by increasing atomic number. The Periodic Table is not arranged according to atomic mass, element name, or element symbol.

There are groups and periods on the Periodic Table. A group is a vertical column on the Periodic Table. A period is a horizontal row on the Periodic Table. Elements in the same group have similar properties. Therefore, each group on the Periodic Table has special names and properties. These properties are due to the fact that elements in the same group have the same number of valence electrons.

Essential Periodic Groups

Alkali Metals

  • Group 1A or Group 1
  • 1 valence electron
  • Highly reactive with water.
  • Cannot find these elements on their own in the world, they are always bound to other elements.

Alkaline Earth Metals

  • Group 2A or Group 2
  • 2 valence electrons
  • Highly reactive, but not as reactive as alkali metals.

Transition Metals

  • Groups 3 through 12
  • They have the typical properties of metals (conductor, malleable, etc.)
  • Besides having the typical properties of metals, there are not any other common features that they all hold.

Halogens

  • Group 7A or 17
  • 7 valence electrons
  • This is the most reactive group on the Periodic Table because it only needs to get 1 electron to complete the Octet Rule.

Noble Gases

  • Group 8A or 18
  • 8 valence electrons
  • Non-reactive
  • It already has a full octet, so there is no need to react because it has all the electrons that it needs.

Metals, Non-Metals, and Semimetals

Elements on the Periodic Table are classified as metals, non-metals, or semimetals. We can identify them based on their location on the Periodic Table.

Metals

Metals are shiny, solids at room temperature, and they are malleable. If something is malleable, then this means that is is able to be hammered or pressed permanently out of shape without breaking or cracking. They are also good conductors of heat and electricity. This means that they are able to draw a current/heat through the material.

Nonmetals

Non-metals are dull, gases at room temperature, and they are not malleable. Additionally, they are poor conductors of heat and electricity, so we call them insulators. If something is an insulators then this means that they resist the flow of heat or electricity through the material.

Semimetals

The final group of materials semimetals. This is a select group of elements that have characteristics of both metals and non-metals. Semimetals look metallic, but are brittle. They are neither good nor bad conductors or insulators, so we call them semi-conductor.

It is rather easy to locate metals, non-metals, and semimetals on the Periodic Table. The “staircase” separates metals from non-metals on the Periodic Table Elements to the left of the staircase are metals Elements to the right of the staircase are non-metals Elements that touch the staircase (except aluminum) are semimetals.

There is one exception to the rule and that is hydrogen. Hydrogen is located to the left of the staircase, but hydrogen is a non-metal.

Practice!

The Mysterious Elements

The District 2 tributes have a large number of elements at their disposal, but you were able to obtain a vile of mercury at the cornucopia. You dip your arrow into the vile and aim it at the leg of the tributes (mercury poisoning is sure to get you sponsors). To see if this is successful, complete the following assessment: SEE ASTOR FOR DISTRICT 2 ASSESSMENT!

Other Useful Resources