This week we take a close look at the periodic table. Mendeleev and others since have arranged elements into a Periodic Table of the Elements. The power of Mendeleev's table is that he could make predictions about unknown elements.
How are elements arranged on the periodic table?
Why do elements in groups share similar properties?
We also want to be finding interesting experiments in chemistry. Why are they important and how do they tie in with what we are covering? To help get the ball rolling we will look at some great discoveries and experiments throughout history in the Science Channel's presentation of 100 Greatest Discoveries: Chemistry.
This weeks contract has you select a unique element from the periodic table and design a poster for its square on the Periodic Table. The best posters will be set into our ceiling Periodic Table of the Elements for all time, or until it is replaced...so come up with your best design.
18 comments:
is there such thing if there was a chemical reaction in space and suddenly when some type of gasses mixes with the other gas creates a huges explosion in space that reaches to us and kills earth at 2012?
Why is phosphorus used in your bones? How does it make bones grow?
Why are elements in groups 1 and 17 more reactive then the other groups?
is the acide that farmer us reactive to other things
Why are groups 17&18 called rare earth elements?
How are elements in a group "grouped"?
does the # period mean that the element has that # electron rings?
why are elements formed the way they are?
Were there any other people who tried to make a periodic table besides Dimitri Mendeleev and Lothar Meyer?
Why is Darmstadtium a synthetic element? what does this mean?
what bond are alloys?
Why do radioactive elements harm people
Is it possibale to have two different compounds that have the same number of atoms and the same element.
Is there a way to change water directly into hydrogen peroxide by adding one oxygen to it????????
How do u find the Atoms in the equation
If you look at an element on the periodic table, you can tell how many protons there are by looking at the top number or the atomic number. If there is say 35, then that's how many electrons there are too. Then to find out the neutrons, you take the atomic mass number,( rounded up to the nearest whole number,)and subtract by the atomic number. Like bromine, 79-35=44.
How do you balance equations
Matt, Darmstadtium is a synthetic element and this means that it was made in a lab and hasn't been found in nature.
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