Others like potassium are added regularly to soils as fertilizer for the purpose of being withdrawn as needed by crops. The relative ability of soils to store one particular group of nutrients, the ...

occupying the octahedral holes. Notice that the octahedral holes are along the edges (for a net of three cations) and in the center of the cube (one more cation). Thus we have four anions (FCC) and ...

Show the photo: Magnified salt (JPG). Explain that this is a magnified picture of salt crystals. Tell students that each salt crystal is made up of two different types of particles called sodium ions ...

Three main conditions are necessary for a controlled thermonuclear fusion: The temperature must be hot enough to allow the ions of deuterium and tritium to have enough kinetic energy to overcome the ...

Fluorescence resonance energy transfer (FRET) is the transfer of energy between two fluorophores, and is used to detect the interaction of two labelled molecules in close proximity. Single ...

An electron is transferred from sodium to chlorine. Sodium becomes a positive ion and chlorine becomes a negative ion. The positive and negative ions attract each other and form the ionic compound ...

In these experiments, physicists collide heavy ions (charged atoms) together and then examine the plasma created. In previous decades, such tests mostly used high energies to create high temperatures.

MRA stands for magnetic resonance angiogram or magnetic resonance angiography. It’s a type of magnetic resonance imaging, or MRI. Instead of using radiation, like with X-rays and computed ...

A white precipitate forms if sulfate ions are present. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white ...

Functional magnetic resonance imaging is a non-invasive method for measuring brain activity. It uses magnetic resonance imaging to map blood oxygenation levels in the brain and estimate changes in ...

Group ions contain two or more atoms and usually have a negative charge. The formulae of these ions can be found in the data booklet. We can take the number of charges on the ion as the valency of ...

He needs it. Arguably the hardest working man in tennis, Mike Cation provides first-ball to last-ball commentary for the USTA Pro Circuit livestream. First-ball to last-ball, start to finish ...