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Inverse Proportion ​ ​ A relationship between two variables where an increase in one variable leads to a decrease in the other variable, and vice versa.

The Maxwell-Boltzman curve can be used to explain the effect of adding a catalyst on reaction rates. Grade 10 SABIS ​

Endothermic Grade 10 SABIS SABIS

Mass lost in nuclear reactions changes to energy according to E = mc2 Grade 10 SABIS ​ Mass lost in nuclear reactions undergoes a profound transformation into energy, as famously expressed by Einstein's equation E = mc^2. This equation demonstrates the equivalence between energy (E) and mass (m) multiplied by the speed of light squared (c^2). According to this equation, a small amount of mass can be converted into an enormous amount of energy. The speed of light (c) is an incredibly large value, approximately 3 x 10^8 meters per second, which makes c^2 an extraordinarily large number. In nuclear reactions, a small fraction of the total mass involved in the reaction is lost. This lost mass is precisely the amount that is converted into energy according to Einstein's equation. The energy released is immense and can be harnessed for various practical applications. The conversion of mass to energy in nuclear reactions arises from the binding energy of atomic nuclei. Nuclei are held together by the strong nuclear force, and breaking this force releases energy. The difference in mass before and after a nuclear reaction represents the mass lost, which is transformed into energy. For instance, in nuclear fission, the splitting of a heavy nucleus into two or more lighter nuclei results in a slight decrease in total mass. This small decrease corresponds to a tremendous release of energy. Nuclear power plants utilize this process to generate electricity by harnessing the energy released from the conversion of mass to energy. Similarly, in nuclear fusion, the combining of light nuclei to form a heavier nucleus involves a small increase in mass. The additional mass is precisely the energy that is required to overcome the electrostatic repulsion between the positively charged nuclei. This release of energy powers the sun and other stars. The conversion of mass to energy in nuclear reactions is responsible for the incredible amount of energy released in processes such as nuclear power generation and nuclear weapons. It is the basis for the immense power of atomic bombs and the controlled release of energy in nuclear reactors. It's important to note that nuclear reactions involve highly energetic processes and require precise control to ensure safety and to prevent uncontrolled releases of energy. Proper handling and regulation are vital in utilizing nuclear energy for peaceful purposes. In summary, mass lost in nuclear reactions undergoes a remarkable transformation into energy according to Einstein's equation E = mc^2. This equation demonstrates the equivalence between mass and energy and reveals the tremendous potential for energy release in nuclear reactions. Understanding this relationship is crucial in harnessing nuclear energy for various applications and in advancing our knowledge of the fundamental workings of the universe.

In general, reactions that do not involve bond rearrangements tend to be rapid. Grade 10 SABIS ​

Rate of reaction definition SABIS Grade 10 SABIS ​ The phrase “rate of reaction” means how fast is the reaction or the speed of the reaction.

Heating Stage ​ ​ The portion of the curve where the substance is being heated, resulting in an increase in temperature and average kinetic energy of the particles.

Potassium reacts with hydrogen, oxygen, fluorine and chlorine to form white solids. Grade 10 SABIS ​

Conservation of Molecules Grade 10 SABIS SABIS In chemical reactions, the number of molecules remains conserved. This means that the total number of molecules before and after the reaction remains the same.

Any reaction or process that consumes heat energy Grade 10 SABIS SABIS Endothermic

comparing physical and chemical changes ​ ​ Physical Change Does not produce a new kind of matter Is generally easily reversible Is not accompanied by great heat change Does not produce an observable change in mass Chemical Change Always produces a new kind of matter Is generally not easily reversible Is usually accompanied by considerable heat change Produces an observable change in mass Some examples of physical changes include: Melting ice Boiling water Cutting paper Crushing a rock Mixing salt and water Some examples of chemical changes include: Burning wood Cooking food Rusting iron Digesting food Brewing beer

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