The law of octaves, also known as Newlands’ law of octaves, was a hypothesis proposed by John Newlands in 1865. It stated that chemical elements, when arranged in order of increasing atomic weight, exhibited similarities to the notes of an octave in music. He noted that, when elements were arranged in order of increasing atomic …
The Newlands periodic table was the first successful attempt at organizing the chemical elements into a systematic table. It was created by English chemist John Newlands in 1864. The table arranged elements in order of increasing atomic weight and grouped them into eight vertical columns based on similar chemical properties. Newlands’ table formed the basis …
The Dobereiner periodic table was created by German chemist Johann Wolfgang Dobereiner in 1829. It was the first attempt to organize the elements into a periodic table. The table was based on the idea of triads, which are groups of three elements with similar properties. He noticed that the mass of the middle element of …
The Lavoisier Periodic Table is an alternative to the traditional periodic table of elements. It was designed by Antoine Lavoisier, a French chemist, in the late 18th century. The Lavoisier Periodic Table is based on the idea that elements can be grouped together by their chemical properties. The table is divided into two columns, one …
Positive catalyst: A positive catalyst is a substance that increases the rate of a chemical reaction without itself being consumed. These catalysts are usually enzymes or chemicals that help to speed up a reaction by providing an alternative reaction pathway with a lower activation energy. Negative catalyst: A negative catalyst is a substance that decreases …
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Catalysts are substances that speed up the rate of a chemical reaction without being consumed in the reaction. They do this by lowering the activation energy, the amount of energy needed for the reaction to begin. Different catalysts may be used depending on the reaction being catalyzed, and the rate of reaction will vary depending …
Catalyst and rate of reaction – ഉൽപ്രേരകവും രാസപ്രവർത്തനവേഗവും Read More »
The energy threshold is a limit or boundary value for energy that is used to determine whether or not a reaction or process should take place. In some cases, a certain amount of energy must be exceeded before a reaction or process can occur, while in others the energy threshold is a lower limit below …
The temperature and rate of reaction is directly related. An increase in temperature will typically result in an increased rate of reaction. This is due to the fact that molecules move faster and with more energy when exposed to higher temperatures, which increases the chances of successful collisions between reactants. For example, an increase in …
Temperature and rate of reactions – താപനിലയും രാസപ്രവർത്തന വേഗവും Read More »
Surface area of a solid is a measure of the total area of its exposed surface. The amount of surface area affects the rate of a chemical reaction because the larger the surface area, the more molecules that are exposed, which increases the reaction rate. For example, if you have a solid cube and you …
Concentration is one of the main factors that affect the rate of a chemical reaction. As the concentration of reactants increases, the reaction rate increases as well. This is because when the concentration of reactants is increased, there are more molecules of reactants available to react, meaning more collisions can occur and the reaction rate …