Hinchcliff,+Alec

Mentos and Coke

One thing that I noticed was the picture of the large mentos and coke fountain. That reminded me of 8th grade when we used mentos dispensers to dump 4 mentos into different bottles of soda. I got the diet coke and my fountain went the highest. I though it was amazing that all of the things that happened did.

Another thing I found interesting was the answer to one of my questions from back when I did saw my fountain fly. My question was how in the world did that just happen. I saw in the article that the fountain is created by the pressurized CO2 that got built up in the bottle from the mentos.

The final thing that noticed that brought interest was that when you open the bottle the pressure on the sodas surface drops. Now that I think about it though I realize that that makes perfect sense because when the bottle is opened some CO2 is released from the initial fizz is let off.

Alec, OK. You got it right this time! 5 stars! MW

Redefining the Kilogram

One thing I noticed was how many different kinds of measurements there are. Like kelvin, and candelas. I found that very cool.

Another thing I found interesting was that the other copies were also the bases of kilograms. I thought there was one base kilogram. So how do they know the copies are exactly 1.00000 continuous kilograms?

The last thing I found was that they said that this change and the number is going to help educators and the students better understand the mole. I think thats going to ust create more confusion. I don't get it now, so I doubt this change is going to make it better.

The MVP is that the kilogram is the last of the SI based units that is still defined by a physical artifac

Alec, We will learn alot about the mole! Good post. 5 stars. MW

Crude Oil

Before now, I really didnt know how distillation worked, but it is still a little confusing because of the different steps.

I find it really interesting though because it gets split up into 5 different liquids. I noticed though the darker liquids took longer to condense into the test tubes.

The one point I found odd though is the fact that those huge crude oil distillation plants split all of those liquids at once. You would think though that some of the liquids would get mixeProxy-Connection: keep-alive Cache-Control: max-age=0 throughout the whole thing, because the tubes that collect the distilled liquids would probably collect some different liquids.

Alec, The different fractions are still mixtures - good observation! It takes a lot more work to get a pure substance! 5 stars. MW

25 Words Abstract for "Where do elements come from"

Chemical Elements come from inside stars. They come from supernovas to planets like earth. Elements are created through the process scientists like to call, nucleosynthesis. Alec, Looks good! 5 stars. MW

SUGAR: An Unusual EPLOSIVE!

I would have never guessed that sugar could be a deadly explosive. It just seems like a harmful tasty substance. I guess I was wrong!

I thought it was cool that they had balancing equations in the article like we did in class. They had: C6H12O6 (solid) + 6 O2 (gas) à 6 CO2 (gas) + 6 H2O (gas) + energy.

I also thought it was cool that we tested sugar as an explosive in class, and it was the main component in a deadly explosion!

Alec, Cool beans! You nailed the good points. A little late on this one 4 stars. MW

Helium Balloons

I noticed they were talking about atmospheric pressure, and we learned about atmospheric pressure in class!

It never dawned on me that density was part of the picture when you talked about pressure. I think its pretty neat that they kinda tie together like that.

I saw they transfered into newtons for one conversion. What are newtons? Im guessing they are just another category for measuring pressure.

Alec, Actually newtons is a measure of force. Weight is actually a force, grams is a mass. Pressure is force/area. Good thoughts but what is your MVP? 4 stars. MW