DENSITAAYYY

You are soo dense. ha.
Just thought I'd get that in there.



Density is a physical property of matter that measures mass per unit volume.
Anyways here are some formulas you maayy want to store in the old memory bank.  They may come in handy sometime. You never know.

Density = Mass/Volume

Volume = Mass/Density

Mass = (Volume)(Density)


Density helps determine different components in a mixture as the denser component will sink.
If the density of an object is more than the density of the liquid, it SINKS. If it doesnt, it FLOATS.
It is also handy to know that 1cm³ = 1mL so 1000cm³ = 1L (in case you need to convert!)
The density of water is 1.0g/mL or if you convert, it would be 1000g/L (1.0g/mL x 1000mL/L)

So here is an example of how you may see or find density in life. It is also the best experiment you will ever do. 

You're gonna need some OREOS (noooww i have your attention...), some milk (i used 75mL), something to put the milk in, a calculator, and a pen and paper.

So the first thing you need to calculate the density of an OREO is it's mass.  You can't really tell from the picture, but it says that 2 OREOS = 24g.  According to my calculator, that means each OREO has a mass of 12g.  Well that was easy.

The next thing you need is to calculate the volume.  I started with 75 mL of milk in the measuring cup shown below.  Again, stupid flash makes it difficult to read.  The smallest division on the cup was 25mL, I measured to the nearest 2.5mL.   I dropped in the cookie...

And voila!  From what I saw with my own eyes (not the camera) the cookie plus milk had a total volume of 97.5mL. 
volume of milk = 75
total volume = 97.5
97.5 - 75 = 22.5mL (volume of OREO)

Alright now that we have all that figured out...

Notice how I rounded to 2 sig figs? Smarty pants.

Oh that's weird... where did the oreo go? ;)

You also need to know how to calculate the expression of error. This is done by taking your three measurements, and calculating the average (using the correct number of SigFigs, of course).  You then find out what the accepted measurement is, and use the below equation to find the percent of error:

[(your measurement - accepted measurement) / accepted measurement] x 100

ta da!

See you later alligater

In a while crocodile

See you soon big baboon

XOXO

Beryllium Chemists

Heather is over and out.