is pulverizing a chemical change
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What is pulverization of metal?
This process is often called 鈥?pulverization 鈥? it is induced by mechanical stress in the MH particles. The metal lattice expands and contracts with adsorption and desorption of hydrogen atoms at charging and discharging. The process is more pronounced at fast charging owing to adsorption and desorption rate and temperature effect.
Is crystallization a physical or chemical change?
Crystallization is a physical change. What are physical and chemical changes? A chemical transition is the result of a chemical reaction, and a physical change occurs where the structure of matter changes but not the chemical identity. Examples of chemical transformations include fire, frying, rusting, and rotting.
What is the difference between physical and chemical change?
Also, no new substance is formed in the above physical change. What is a Chemical Change? A change in which one or more new substances are formed is known as chemical change. For Example, when the iron is exposed to air and moisture, rust formation takes place. Rust is nothing but Iron Oxide; a new substance formed out of the reaction.
What is chemical change give an example?
A change in which one or more new substances are formed is known as chemical change. For Example, when the iron is exposed to air and moisture, rust formation takes place. Rust is nothing but Iron Oxide; a new substance formed out of the reaction.
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