Question

Keywords
Chemical change
Chemical reaction
Crystallisation
Galvanisation
Physical change
Rusting

I need shot defination for all these
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Answer 1

Answer:

Chemical change - A irreversible change in which a new substance is formed

Physical change- A reversible change in which no new substance is formed

Galvanisation- Iron is coated with zinc to prevent from rusting

Rusting- iron reacts with moisture and oxygen to form iron oxide which is known as rust

Answer 2

Answer:

Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction

Crystallization is the solidification of atoms or molecules into a highly structured form called a Crystallization

Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting.

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.

Rust is a chemical reaction (oxidation) of iron that occurs over a period of time as the bare metal surface comes in contact with oxygen present in the air or water.

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