Sunday, October 30, 2011

Periodic Table Review: Los Alamos Laboratory

This Table is very simple and basic, you can find it in color and Black/White presentations and the best of all, it is in high Resolution so you can print it.
To download the printable version click here.


This is like any basic table but with one more feature: Electronic Configurations
  • Name of Element
  • Symbol
  • Atomic Mass
  • Atomic Number
One thing to notice is that his table does have a the group numbers, but doesn't have the Period numbers.
It has references for the colors of the Elements and their aggregation state, but as you might noticed it does not provide information about the color of the Element types such as noble gases or Alkaline or Transition metals.
I wouldn't recommend this table to students starting to learn chemistry but it is good for those going through Inorganic introduction and Electronic Configuration.

Sunday, October 23, 2011

Laboratory Glassware: Erlenmeyer Flasks

Another common and useful Glassware found on the lab is the Erlenmeyer Flask, why is it called this way?, this is thanks to its creator: Emil Erlenmeyer.

Erlenmeyer_Flask_Original_DesignHere is a picture of the original drawing made by Emil of his invention.


The shape of this flask is very unique, and easy to distinguish from other glassware, it has a narrow neck and a flat bottom. The lips are rounded on most Flasks.

And like most Glassware it is made of Pyrex or Borosilicate Glass. The capacity is wide aswell, there are Erlenmeyer Flasks of 50, 150, 250, 500 and 1000 mL.


Personally i find this Flask one of the most useful Glassware in a Lab, its good to mix substances as its easy to shake without fearing of spilling chemicals around thanks to its narrow neck. And trust me there is no way to spill anything if you shake it in the correct way, no matter how hard you do it :). It is also used on titrations.

Good to hold volatile chemicals, as you can easily seal the Flask with cork or stopper, a watch glass, paraffin film or Tin foil on top of it preventing harmful vapors being spread in the air, even if not covered the narrow neck has a slow evaporative loss compared with a larger neck like the Beaker.

More Laboratory Glassware 

Sunday, October 16, 2011

Laboratory Glassware: Beakers

Let’s start with one of the most common materials found on the Lab, a Beaker.


A beaker is a cylindrical glass container, most have a small spout to help pouring. They can be found in many sizes.
The most common have 250 mL. of capacity, and as i said they are made of glass, mostly borosilicate glass (also called Pyrex), this material is very resistant to heat and makes it perfect for boiling substances.

Besides the common capacity these Beakers can be found in capacities like: 50, 100, 150, 500, 1000 and 2000 mL. Every glassware on the lab has specifications on the side, such as Temperature of calibration.


These beakers have many purposes and can be used for mixing, stirring, measuring or boiling substances.
Although its not recommended to use it to measure substances, because the student can incur in mistakes in this procedure and its better to use a Graduated Cylinder. This beakers have a rough scale that can go from 0-50-100 or bigger ranges, making them not practical for measurement procedures.

 Be careful when boiling or heating, as i said be sure the Beaker is made of Borosilicate glass; one of the most common reasons for this material to break is the mistake of laying the Hot Beaker on a Cold surface such as the tiles on the lab.
More Laboratory Glassware 

Saturday, October 15, 2011

Chemistry Laboratory Glassware Material and Equipment

One of the main reasons I decided to study chemistry was the opportunity to be at a laboratory, experimenting with chemicals.
But soon i realized that i wasn't going to do any real science for some months, until i had learnt all the basics for Laboratory Experiments, that is safety rules and everything about the Lab Materials.
At first i was disappointed, i hate 100% theory lessons or have to learn a bunch of long rules, but years later after some accidents that I've had on the lab, I can assure you they are VERY important and essential.
You need to learn about EVERY material and equipment, how to handle and its purpose on the Lab. Here is the list of the most common materials that can be found on a Lab. I’ll be filling out all the information about them.

Of course there are many more, including the equipment necessary like thermometers, Bunsen burners, etc. Stay tuned for more information about each one.

Sunday, October 9, 2011

Fun way to learn the elements of the Periodic Table

Every kid needs to have a time out from studying, and i encourage you to do so. Check this video I found about Tom Lehrer and his song about the elements.

I'm currently memorizing it. For the first time I am enjoying learning all the elements.

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