1 / 13

Breaking the Code

Breaking the Code. The Periodic Table. The “ Modern ” Periodic Table that we use today was started by a scientist named Mendeleyev. Earlier Periodic Tables were not organized quite the same way as the one we use now…

kitra
Download Presentation

Breaking the Code

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Breaking the Code

  2. The Periodic Table The “Modern” Periodic Table that we use today was started by a scientist named Mendeleyev. Earlier Periodic Tables were not organized quite the same way as the one we use now… Future scientists paid more attention to many of the different properties of each individual element and found that they could organize the elements based on these properties.

  3. The Periodic Table We have already uncovered some of the patterns that exist on the “Modern” Periodic Table. Today we will uncover more!!! 

  4. The Periodic Table Transition Elements We left out the "middle" elements when we did our patterns.

  5. Today’s Big Question… How can you predict properties of elements using the Periodic Table? You will use a poster that only contains the columns that we have already found patterns for (Groups 1-2 and 13-18) and your own “Modern” Periodic Table (from your binder!!!)

  6. The Periodic Table Each element on the poster has specific info. Re: physical and chemical properties.

  7. Wrap-Up Discussion Softness # of "Spikes" Reactivity Increase size = valence e- React w/ same substances Form compound w/ same ratios and Solids to Gasses

  8. Electron Configuration and Properties Which of the patterns that we have discussed are related to the element’s Electron Configuration? The reactivity pattern, size, valence e- pattern, and the compound formation pattern, oxidation number. What type of properties are these? These are mostly chemical properties. (size is not.)

  9. Wrap-Up Discussion Given an element that is located in Group 17 and Row 2, describe everything you can about this element. It’s a nonmetal, has 7 valence e-, forms an ion with a -1 charge, it is a gas at room temperature, it is extremely reactive, nonconductive, possibly flammable, low melting /boiling point and it’s a smaller atom.

  10. Copper Gold Cu 63.5 Au 197.0 shiny, reddish metal shiny, yellow metal found in CuCl Reacts slowly in air Not reactive • found in • AuCl Wrap-Up Discussion Use the cards for Cu, copper, and Au, gold, to describe all you can about the element silver, Ag. WITHOUT looking at your periodic table!!!

  11. Wrap-Up Discussion You should have been able topredict what Silver would look like, an estimate of its atomic weight, its reactivity, what other element it would form a compound with, its relative size, and how many “prongs” = valence e- it would have.

  12. Wrap-Up Discussion How did you do?!?! Silver Shiny metal Ag ~100 Reacts very slowly with air. Found inAgCl

More Related