Download - Periodic Table of the Elements Review
Periodic Table of the Elements Review
TESLATESLA
August 2008August 2008
Workshop goals
• What is matter? • What is the atom? And what does it
have to do with matter?• How is the periodic table of elements
organized?
Big Idea
Elements and their combinations account for all the varied types of matter in the world.
What is matter?
Examples Measuring matter Types
The classical elements are one way to organize matter
A more modern classification system is the “states of matter”.
MATTER
MASS & VOLUME
SOLID LIQUID GAS
STATES OF MATTER
has
Matter is made of atoms
Matter made up of one type of atom is a pure substance called an element.
Atoms can also combine to make molecules
Atoms and molecules behave differently in different states of matter.
MATTER
MASS &VOLUME
SOLID LIQUID GAS
STATES OF MATTER
made up of
ATOMSELEMENTS
of one type make
has
Our current model of an atom
Warning: not to scale
The type of atom is determined by the number of protons in the atom.
Electrons are arranged around the nucleus in specific energy levels called shells.
n=3n=2n=1
MATTER
MASS & VOLUME
SOLID LIQUID GAS
STATES OF MATTER
made up of
ATOMSELEMENTS
of one type makeNUCLEUS
Inside
Protons + & Neutrons
Outside Electrons -
made of
has
Mixtures and solutions lesson 2
1)Elements are organized in the periodic table based on their chemical properties.
2)Elements are classified as metals or nonmetals.
3)Metals are good conductors of electricity and heat and nonmetals are not.
Lesson Content Goals Guiding Questions
1)How are elements arranged in the periodic table of elements?
2) How are elements classified?
3) What are some differences between metals and nonmetals?
Engaging scenario“I really appreciate your helping my neighbor put those
molecules back together. However, now I need your help. I bought some card models of elements, which came in special containers. While I was gone, my nephew got some of the cards out of their corresponding containers, mixed them up and left them on top of the table. I want to put them back, but I cannot figure out to which container they belong. There are several different things that could be used to group them, but I don’t know which is the right way. There are three colors of cards: blue, yellow and green. On one side of the cards, the letter symbol of the element and its name are displayed (the NAME side). On the other side, it shows the parts that make up an atom of the element and its symbol (the PARTS side). How can I put them back together? What is the problem I need to solve?”
Conclusions
• The rows in my table represent …….because……
• The columns in my table represent …..…because…….…
Problems to solve using your table
• Which elements in your table have 7 electrons in their outer shells?
• Which elements in your table have three shells?
• In which column and row would you most likely find an element with 4 shells and 5 electrons in their outer shell? What are the total # of protons this element has?
Problems to solve using your table
• Which elements in your table have 7 electrons in their outer shells?
• Which elements in your table have three shells?
• In which column and row would you most likely find an element with 4 shells and 5 electrons in their outer shell? What are the total # of protons this element has?
Oh yeah, I actually had 18 containers
Elements are classified as metal, metalloid or nonmetal.
Elements in the same group (column) behave in a similar way.• Alkali- one outer electron, given away
to other elements• Alkaline- two valence electrons given
away to other elements • Halogens- attracts one electron from
another elements• Noble gases: nonreactive
Review goals
• What is matter? • What is the atom? and what does it have
to do with matter?• How is the periodic table of elements
organized?
RESOURCES
www.chem4kids.com• http://www.irvingisd.net/~rflint/the_periodic_table
1.htm• www.ChemicalElement.com• www.school-for-champions.com/default.htm• www.Chemistry.about.com• www.Webelements.com