June 2010
54 posts
May 2010
61 posts
Fact: The stars and bursts of light you see when... →
Anonymous asked: What causes precipitation between two compounds that are mixed with each other (like, for example, barium chloride and sulfuric acid)? How do we predict which one becomes the precipitate? Thanks!
Water part II
Question
what happens to water molecule when it is exposed at low temperature?
expands? contracts?
Answer
When water is a liquid, it has a random structure (the molecules have not specific structure or distance between molecules).
When water is frozen it forms a rigid structure, due to the spacing of the molecules, which will be greater than liquid water, it will expand, if you freeze a full...
Water?
Question
why do some things dissolve in water and others don’t?
Answer
Water is a polar substance, it has both a negative end, the oxygen, and positive end, the hydrogen’s.
If a substance dissolves in water, it will be polar.
Take NaCl, table salt, the water will be attracted to either the positive Na or the negative Cl and will surround that ion. Hence it will dissolve!
Hope this...
Orthodox/Paradox/Ferrous Wheel
susannotsusie:
Have I ever mentioned that I’m a total O-chem nerd?
From: Nearing Zero by Nick D. Kim
Today is Towel Day! →
somethingintellectual:
Don’t forget your Towel!
“A towel, it says, is about the most massively useful thing an interstellar hitchhiker can have. Partly it has great practical value. You can wrap it around you for warmth as you bound across the cold moons of Jaglan Beta; you can lie on it on the brilliant marble-sanded beaches of Santraginus V, inhaling the heady sea vapors; you can sleep...
2 tags
James Harrison, 74, has an antibody in his plasma... →
Just wanted to share this because it GMH.
-fy!chemistry
“An important scientific innovation rarely makes its way by gradually winning...”
– Max Karl Ernst Ludwig Planck
(via scienceisbeauty)
ancesmulles asked: is fire a matter?
confusionsofawastedyouth asked: hello! are humans considered as matter? this question has been bugging me ever since i tried to ask my seventh grade teacher about it. are we or aren't we and why? :)
whenyouwishuponapaperstar-deact asked: Why is oil lighter than water ?
lucius-derpius asked: My GCSE Chemistry exam is on the 26th. I still don't understand Empirical Formula or Relative Atomic Mass, can you help explain it in a way that won't blow my not-so-chemically-inclined mind? thanks :)
Quantum Mechanics!: The Time I Grew Weary With... →
Once upon a theoretical quantum leap, Where classical thought lies fast asleep, And nothing continuous is taken into account, Because things are grouped in set amounts.
My good friend Planck was sitting quietly, Contemplating the radiation of a blackbody. Upon my arrival, he turned to me and…
jkub-extreme asked: The night before the AP Chem exam last Tuesday, I came on here instead of studying. I think it was worth my time. =]
2 tags
I wish we could do cool stuff like this in the...
theeasykill:
“A solution of hydrogen peroxide and one of saturated potassium iodide. We’re going to combine these chemicals with ordinary dish soap creating a little exothermic release of oxygen.“
This is the Elephant Toothpaste experiment.
The chemistry behind this experiment is explained here.
fuckyeahenergydrinks-deactivate asked: Hey, I just started a tumblr about energy drinks and I was wondering if you have any information about the chemistry behind energy drinks? Like the energy blends of caffeine and taurine and stuff like that.
6 tags
deanjosonexp asked: What is the compound responsible for glow-in-the-dark objects? what properties allow for this? How do the individual molecules behave?
1 tag
Anonymous asked: Mendel or Darwin?
idontsleepbecauseof asked: if photosynthesis is endothermic, why does it happen 'spontaneously'?
2 tags
Better, Stronger, Faster →
Royal Society of Chemistry:
Now we have bionic eyes and limbs, and chemists are creating artificial bodily tissues to rival nature’s own.
Electronic and mechanical limb and organ replacements are already being tested on humans
Chemists and biochemists are developing artificial versions of bodily organs and tissues
US chemists have developed artificial collagen which improves on...
Girl frozen in time may hold key to ageing →
azspot:
Scientists are hoping to gain new insights into the mysteries of ageing by sequencing the genome of a 17-year-old girl who has the body and behaviour of a tiny toddler.
Brooke Greenberg is old enough to drive a car and next year will be old enough to vote — but at 16lb in weight and just 30in tall, she is still the size of a one-year-old.
Until recently she had been regarded as a...
Even silent videos excite the listening brain -... →
scienceideas:
fuckyeahneuroscience:
“Is a sound only a sound if someone hears it?
Apparently not.
Silent videos that merely imply sound - such as of someone playing a musical instrument - still get processed by auditory regions of the brain.”
2 tags
DISCOVER Magazine: 10 Obscure Elements That Are... →
Elements can be hipster too.
Osmium happens to be one of them.
Oh, and along with “arsenic and mercury”, antimony is one of the most deadliest elements on the periodic table.
Misguided doctors in the past used to prescribe it as medicine, and one such patient who was prescribed antimony for his depression and fever was Wolfgang Amadeus Mozart. He died soon after at 35. There are,...
Apparently House loves chemistry too :3
“You want to know how two chemicals interact, do you ask them? No, they’re going to lie through their lying little chemical teeth. Throw them in a beaker and apply heat.”
- Dr Gregory House.
Thanks venomv!
