A solution that has been titrated against a primary standard. A standard solution is a secondary standard.
Latest Articles
-
Features of the Scanning Tunneling Microscope
The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...
-
Chemical Safety
People use chemicals every day for a wide array of purposes, which can include work and house hold duties. Many of us fail to realize that we are actually handling potentially deadly chemicals when we simply clean the bathroom or wash the car. This brings to mind the reason why chemical safety is...
-
Ozone
We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.
-
Interesting facts about metals
Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.
-
Gas of rotten eggs
If you happen to break a rotten egg, then you know the smell of hydrogen sulfide, because the stench of the spoiled egg depends on of its presence in rotting protein substances.
Most Popular
Hydrometer
A device used to measure the densities of liquids and solutions.
Metal
An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table, about 80% of the known elements are metals.
Dissociation Constant
Equilibrium constant that applies to the dissociation of a comples ion into a simple ion and coordinating species (ligands).
Eluant or eluent
The solvent used in the process of elution, as in liquid chromatography.
Solvolysis
The reaction of a substance with the solvent in which it is dissolved.
Gel
Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.
Insulator
Poor electric and heat conductor.
Cell Potential
Potential difference, Ecell, between oxidation and reduction half-cells under nonstandard conditions.
Meniscus
The shape assumed by the surface of a liquid in a cylindrical container.
Flammable
A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).
