By: Katie Hauldren
Today, to kick off the second unit and to start looking at the periodic table, we did the "Metal, non-metal and metalloid lab". Basically we were given 8 unknown elements and we recorded some of their physical and chemical properties. The goal of the lab was to try to figure out what element each unknown was.
(Pictured below is all the unknown elements and two liquids that will help us in the chemical testing)
The physical properties of each element we recorded was their appearance, luster (if it is shiny or dull), malleability (brittle or bendable) and its electrical conduct. We used our eyes (obvi) to conclude their appearance and luster. We used a hammer and cutting board (pictured to left) to test each of their malleability. Finally, we used a electricity conductivity tester to find the levels of electricity (i had a picture but my sister deleted it...)
Then to test the chemical properties of the elements, we wanted to see how the elements would react with HCI and CuCI2. We used the plastic dish (photographed to the right) to carry out this part of the expirament. It had a "chemical reaction" if the element bubbled, changed color, changed temperature, in other words if the chemical didn't stay the same.
Today was a GR8 lab and I hope everyone learned a little more about some elements in the periodic table.
REMEMBER: Mr. Lieberman only put 7 elements on the back side of your lab so you are going to have to do some research to figure out the last one.
Homework: Do lab (Don't fret, its not due until Thursday.) and Web Assign 2.3 is up!
peace love chemistry
Next scribe is... Stacie Cho
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