Conrad,+Caitlin

Tattoo Ink There have been changes in the regulations for tattoo places like sanitizing the needles, but not the ink used when the tattooing process starts. To make blue color ink you would need the elements of copper salts or cobalt oxide. This relate to our class because we are learning about the elements, mixtures, compounds, and solutions.

Cait, OK but too short. Only 56 words. 4 stars. MW

Crude Oil

I didn’t know that crude oil is a mixture of hydrocarbons. The video relates to what we are doing in class because we are talking about mixtures and different elements. I really enjoyed seeing how people make oil and separate it for the different things. I also didn’t think that it took as long as it did to make oil and gasoline as it did.

Cait, Ok but a bit short again. 65 words. 4 stars. MW

"Redefining the Kilogram"

This article is about the kilogram is one of seven units in the International System of Units. It also talks about Avagadro's connstant which is equivalant to one mole or the atoms in 12 g. The BIPM commitee is making a decision by 2011. This relates to what we are doing in class because we are learning about the different measurments. The article can also relate to me because i graduate in 2011 and that is when they are making their decision. Cait, OK. BTW it's Avogadro's constant. MW

Where do elements come from?

The Chinese and the Anazasi witnessed a super nova explosion, but when they saw it they thought it was a new star. When the super nova exploded it released twenty six elements in the table and is brighter than a billion suns. In the past century, scientists have been studying the elements in space. The article relates to what we are learning in class because it talks about adding and losing electrons. I also learned that the elements made by stars are heavier than the element of iron.

Cait, Amazing to think of something brighter than a billion suns! MW

Mole Day

I learned that a science teacher in the early 1980's came up with the idea and the word spread. I didn't know that Avogadro was a physacist but studied both physics and chemistry. He didn't even get credit for his hypothesis until 50 years after his death.

Cait, OK, but very short. 3 stars. MW