This is my place to rant and vent about all things related to teaching chemistry, and also to post cool shit.
Background Illustrations provided by: http://edison.rutgers.edu/
Reblogged from thecrippledprince  244,634 notes

emilianadarling:

One day last semester I was on the bus heading to class and I was like ‘fuck class started ten minutes ago I’m going to be late again.

And then I looked down and realized that my professor was in the seat in front of me editing his powerpoints for the class that we were both supposed to be in.

image

Been there

Reblogged from thecrippledprince  244,634 notes

emilianadarling:

One day last semester I was on the bus heading to class and I was like ‘fuck class started ten minutes ago I’m going to be late again.

And then I looked down and realized that my professor was in the seat in front of me editing his powerpoints for the class that we were both supposed to be in.

image

nobodysuspectsthebutterfly:

nijuukoo:

kimberlyspeter:

luftkissenfahrzeug:

clarri:

wowfunniestposts:

Harry Potter and the Chamber of Calculus
Harry Potter and the Prisoner of Algebra
Harry Potter and the Philosopher’s Theorem
Harry Potter and the Goblet of Analysis
Harry Potter and the Order of Operations
Harry Potter and the Half-Blood Statistician
Harry Potter and the Deathly Algorithms

OH MY FUCKING GOD

AND THE ORDER OF OPERATIONS 

I’m in Dumbledores math club…

More like Harry Hypotternuse.


You’re a mathemagician, Harry.

nobodysuspectsthebutterfly:

nijuukoo:

kimberlyspeter:

luftkissenfahrzeug:

clarri:

wowfunniestposts:

Harry Potter and the Chamber of Calculus

Harry Potter and the Prisoner of Algebra

Harry Potter and the Philosopher’s Theorem

Harry Potter and the Goblet of Analysis

Harry Potter and the Order of Operations

Harry Potter and the Half-Blood Statistician

Harry Potter and the Deathly Algorithms

OH MY FUCKING GOD

AND THE ORDER OF OPERATIONS

I’m in Dumbledores math club…

More like Harry Hypotternuse.

You’re a mathemagician, Harry.

Reblogged from ashaqueenasha  127,827 notes
mermaidskey:

hemipelagicdredger:

mermaidskey:

mermaidskey:

oxidoreductase:

Lavoisier is having none of your shit.

Heeeey so fun fact: the woman in that painting is Lavoisier’s wife, Marie-Anne Pierrette Paulze, who not only acted as Lavoisier’s lab assistant but also translated English and Latin texts into French so he could read them. But she didn’t just translate, she pointed out errors in the chemistry in some of the texts. Her observations of these errors convinced Lavoisier to study combustion, which led to his discovery of oxygen. She was also critical to the publication of Lavoisier’s Elementary Treatise on Chemistry in 1789. She kept strict records of every experiment they conducted together and drew detailed diagrams of all their equipment. She also threw amazing parties and invited all the brightest minds in science so her husband could pick their brains. After Lavoisier was guillotined she secured all of his notebooks and equipment for posterity.
In short: NOBODY KICKS MADAME LAVOISIER OUT OF THE LAB.

Also, a side note: My historian husband-to-be pointed some things out to me about this painting. Notice that Madame Lavoisier is looking at the viewer, and all the light is on her, while Lavoisier himself is physically smaller than her, in shadow, and looking up to her in reverence. This isn’t a candid photograph- all of these choices are deliberate. The painting isn’t of Lavoisier- Madame Lavoisier is meant to be the central subject. 
I can just imagine Lavoisier telling all his colleagues that his wife is really the one with all the clever ideas, and them patting him on the back and telling him he’s sweet for saying so.

more like


I LOVE IT

mermaidskey:

hemipelagicdredger:

mermaidskey:

mermaidskey:

oxidoreductase:

Lavoisier is having none of your shit.

Heeeey so fun fact: the woman in that painting is Lavoisier’s wife, Marie-Anne Pierrette Paulze, who not only acted as Lavoisier’s lab assistant but also translated English and Latin texts into French so he could read them. But she didn’t just translate, she pointed out errors in the chemistry in some of the texts. Her observations of these errors convinced Lavoisier to study combustion, which led to his discovery of oxygen. She was also critical to the publication of Lavoisier’s Elementary Treatise on Chemistry in 1789. She kept strict records of every experiment they conducted together and drew detailed diagrams of all their equipment. She also threw amazing parties and invited all the brightest minds in science so her husband could pick their brains. After Lavoisier was guillotined she secured all of his notebooks and equipment for posterity.

In short: NOBODY KICKS MADAME LAVOISIER OUT OF THE LAB.

Also, a side note: My historian husband-to-be pointed some things out to me about this painting. Notice that Madame Lavoisier is looking at the viewer, and all the light is on her, while Lavoisier himself is physically smaller than her, in shadow, and looking up to her in reverence. This isn’t a candid photograph- all of these choices are deliberate. The painting isn’t of Lavoisier- Madame Lavoisier is meant to be the central subject. 

I can just imagine Lavoisier telling all his colleagues that his wife is really the one with all the clever ideas, and them patting him on the back and telling him he’s sweet for saying so.

more like

image

I LOVE IT

mjolnir-worthy:

darklips-heavylifts:

faofox:

raw-fed-pets:

All dogs share the same basic digestive system despite the range of physical variations (and attitudes) across different breeds. Every dog is designed to eat a raw animal-based diet, from the Chihuahua to the Great Dane. Breed-specific dog food brands are simply a marketing gimmick aimed at playing on the pet owner’s emotions, and their desire to feed their pet the best possible diet.


I don’t think that dogs need an animal-based diet. If done right they can be vegan and not contribute to the murdering of innocent animals. We’ve adapted and domesticated them enough to do so. They’ve evolved to live without meat just like us.

You’re the type of person that should probably not own animals that eat other animals.

Dogs can not and should not have a vegan diet. It is wrong and can not be correct by any means.

mjolnir-worthy:

darklips-heavylifts:

faofox:

raw-fed-pets:

All dogs share the same basic digestive system despite the range of physical variations (and attitudes) across different breeds. Every dog is designed to eat a raw animal-based diet, from the Chihuahua to the Great Dane. Breed-specific dog food brands are simply a marketing gimmick aimed at playing on the pet owner’s emotions, and their desire to feed their pet the best possible diet.

I don’t think that dogs need an animal-based diet. If done right they can be vegan and not contribute to the murdering of innocent animals. We’ve adapted and domesticated them enough to do so. They’ve evolved to live without meat just like us.

You’re the type of person that should probably not own animals that eat other animals.

Dogs can not and should not have a vegan diet. It is wrong and can not be correct by any means.

Reblogged from ajora  480 notes

scienceyoucanlove:

Nuclear Chemistry time!

What Is Radioactivity? What is Radiation?

Unstable atomic nuclei will spontaneously decompose to form nuclei with a higher stability. The decomposition process is called radioactivity. The energy and particles which are released during the decomposition process are called radiation. When unstable nuclei decompose in nature, the process is referred to as natural radioactivity. When the unstable nuclei are prepared in the laboratory, the decomposition is called induced radioactivity.

There are three major types of natural radioactivity:

  1. Alpha Radiation

    Alpha radiation consists of a stream of positively charged particles, called alpha particles, which have an atomic mass of 4 and a charge of +2 (a helium nucleus). When an alpha particle is ejected from a nucleus, the mass number of the nucleus decreases by four units and theatomic number decreases by two units. For example:

    23892U → 42He + 23490Th*

    The helium nucleus is the alpha particle.

  2. Beta Radiation

    Beta radiation is a stream of electrons, called beta particles. When a beta particle is ejected, a neutron in the nucleus is converted to a proton, so the mass number of the nucleus is unchanged, but the atomic number increases by one unit. For example:

    23490 → 0-1e + 23491Pa**

    The electron is the beta particle.

  3. Gamma Radiation

    Gamma rays are high-energy photons with a very short wavelength (0.0005 to 0.1 nm). The emission of gamma radiation results from an energy change within the atomic nucleus. Gamma emission changes neither the atomic number nor the atomic mass. Alpha and beta emission are often accompanied by gamma emission, as an excited nucleus drops to a lower and more stable energy state.

Alpha, beta, and gamma radiation also accompany induced radioactivity. Radioactive isotopes are prepared in the lab using bombardment reactions to convert a stable nucleus into one which is radioactive. Positron (particle with the same mass as an electron, but a charge of +1 instead of -1) emission isn’t observed in natural radioactivity, but it is a common mode of decay in induced radioactivity. Bombardment reactions can be used to produce very heavy elements, including many which don’t occur in nature.

source 

* ** View equations at the source link because I can’t do superscript or subscript on here