From a chemist's perspective, organic molecules are best viewed as largely carbon-based entities equipped with functional groups that contain heteroatoms such as nitrogen, oxygen, halogens, sulfur ...

Using nothing but water and said olive oil, he managed to calculate the size of a single olive oil molecule as being 1.63 nanometers in length. To achieve this feat, he took 0.81 mg of olive oil ...

Save guides, add subjects and pick up where you left off with your BBC account. Big question. Grit, determination, hardworking, handsome, charming, funny. Teacher: Well, I guess. But you're ...

In one molecule of water, there are two hydrogen atoms and one oxygen atom. Particle diagrams can also show the ratio of atoms of each element in a compound which in turn can tell us the formula ...

The molecular sizes of oxygen, nitrogen, and argon are 0.299, 0.305, and 0. ... This selectivity sensitively depends on the structure and property of a gas molecule and the geometry (size and ...

There are a total of 10 protons and 10 electrons, so the water molecule is neutral. The electron cloud model shows that electrons are not shared equally in the water molecule. Electrons are a bit more ...

Scientists discover the genetics inside legumes that control the production of an oxygen-carrying molecule, crucial to the plant's close relationships with nitrogen-fixing bacteria. The finding ...

Atoms vary in size depending on the element. Hydrogen atoms are the smallest, while atoms of larger elements like uranium are much bigger. Atomic radius is generally measured in nanometres. 1m=10 ...

Gases are not separated by weight. It's true that carbon dioxide has a higher molecular weight than oxygen and nitrogen, said Suzanne Paulson, a professor of atmospheric and oceanic science at the ...

Nitrogen oxides form when oxygen and nitrogen from the air interact during a high-temperature combustion event. These conditions occur in car engines and fossil fuel-powered electricity plants.

Life on Earth is usually, but not always, composed of six ingredients. Life's Little Mysteries tells you which ones, and why they are considered the building blocks of life.