Nuclear Energy and Chemical Energy
. Thermionic emission is the phenomenon by which free electrons from surface of a metal are emitted when heated to a high temperature. Example 2:- What are Cathode rays? Give three properties of these rays. Suggested Answer:- Cathode rays are a beam of electrons emitte..
Isotopes
Isotopes of an element have same atomic number (Z) but different mass numbers (A). For example, 1 H 1 , 1 H 2 , 1 H 3 are isotopes of hydrogen;..
Isotopes of an element have same atomic number (Z) but different mass numbers (A). For example, 1 H 1 , 1 H 2 , 1 H 3 are isotopes of hydrogen;..General Characteristics of Natural Radioactivity
. The physical and chemical properties of daughter element are different than that of the parent elemen..
Isotopes, Isobars and Isotones
Isotopes - These are the elements having same atomic number but different mass number. They have the same atomic number because the number of protons inside their nuclei remains the same. The difference in their mass number is due to the difference in their number of neutrons. Since they are neutra..
Source of Electricity
Electrons in different metals can have different energies. If two of these metals are placed in a conducting liquid (electrolyte) a difference in electrical potential is set up between them. A pair of different metals arranged in this way is an electrochemical cell. It converts chemical e..
Electrons in different metals can have different energies. If two of these metals are placed in a conducting liquid (electrolyte) a difference in electrical potential is set up between them. A pair of different metals arranged in this way is an electrochemical cell. It converts chemical e..Chemical Reactions
The hydrogen ions so formed diffuse through the porous pot and interact with copper sulphate forming H 2 SO 4 and Cu 2 + ions. Therefore, 2H + + CuSO 4 ------> H 2 SO 4 + Cu 2 + . The copper ions are deposited on the vessel and th..
The hydrogen ions so formed diffuse through the porous pot and interact with copper sulphate forming H 2 SO 4 and Cu 2 + ions. Therefore, 2H + + CuSO 4 ------> H 2 SO 4 + Cu 2 + . The copper ions are deposited on the vessel and th..Chemical Effects of Current (Contd..)
.I. Unit of Z is kg/coulomb (kg C -1 ). 2. When the same amount of charge is made to pass through any number of electrolytes, the masses of the substances liberated or deposited at the electrodes are proportional to their chemical equivalents. i.e., if m 1 and m 2 are ..
.I. Unit of Z is kg/coulomb (kg C -1 ). 2. When the same amount of charge is made to pass through any number of electrolytes, the masses of the substances liberated or deposited at the electrodes are proportional to their chemical equivalents. i.e., if m 1 and m 2 are ..
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