Super Crystal Lattice

5/1/09
Elements Compounds and Mixtures!

Wolf Cub: Mom do you know the difference between elements compounds and mixtures?

Mom Wolf: Well first of all and element is a pure substance that cannot be separated or broken down into more simple substances by physical or chemical means.

Wolf Cub: Wow! But what about a compound mama?

Mom Wolf: Ok ok calm down im getting there. A compound is a pure substance composed of 2 or more elements that are chemically combined.

Wolf Cub: Those two were very interesting but whats the last one!

Mom Wolf: The last one is a mixture. A mixture is combined of 2 or more substances that are not chemically combined.


Wolf Cub: Wow thanks for explaining to me the difference between elements compounds and mixtures.

Mom Wolf: You welcome.


5/5/09
The Rhyme

Compounds combined chemically
and Mixtures don't combined
Elements combined physically and chemically

Solution- A mixture that appears to be a single substance but is composed of particles of two or more substances that are distributed evenly among each other.


5/11/09
Forensic sceince-
Forensic science can be simply defined as the application of science to the law. In criminal cases forensic scientists are often involved in the search for and examination of physical traces which might be useful for establishing or excluding an association between someone suspected of committing a crime and the scene of the crime or victim. Such traces commonly include blood and other body fluids, hairs, textile fibres from clothing etc, materials used in buildings such as paint and glass, footwear, tool and tyre marks, flammable substances used to start fires and so on. Sometimes the scientist will visit the scene itself to advise about likely sequence of events, any indicators as to who the perpetrator might be, and to join in the initial search for evidence. Other forensic scientists analyse suspected drugs of abuse, specimens from people thought to have taken them or to have been driving after drinking too much alcohol, or to have been poisoned. Yet others specialise in firearms, explosives, or documents whose authenticity is questioned.


The Milfod Files

5-13-09
fractional distillation is separating a solution using the bioling point. It is the oldest and most common way to separate things into various components.

View these links-
http://science.howstuffworks.com/oil-refining3.htm
http://science.howstuffworks.com/oil-refining2.htm

5-18-09
Today we wached a movie.
Defenitioins-
Mixture: matter made of 2 or more substances mixed together but not chemically combined.
Heterogeneous mixture: A substance in which components are not evenly mixed. Perfume is an example of a heterogeneous mixture.
Colliod: A mixture in which the particles are mixed together but not dissolved. Shaving cream, smoke, and gellitan are examples of colliods.
Suspension: Heterogeneous mixture in which some of the particles settle out. Water in a raging river form a suspension.
Solution: Well mixed mixture in which particles are small and dissolved.
Solute: Substance that is dissolved into another substance.
Solvent: Substance is which solute is dissolved.
Water: Universal solvent.
Soluble: Ability of a substance to dissolve into another substance.
Insoluble: Inability of a substance to dissolve into a specific solvent.
Solubility:

5/27/09


Observations

Water + Sodium bicarbonate
temp. went down

Water + Calcium Chloride


Water + Calcium Chloride + B.B


Sodium bicarbonate + B.B + Water


Water + Calcium Chloride + Sodium bicarbonate


B.B + Sodium bicarbonate + calcium Chloride



6/12/09
Bunge jumping egg!
We predict that at 7 rubber bands the egg will be 10cm away from the floor.