Question

Reversible vs irreversible changes and chemical vs physical changes

Answer 1

Hey mate here is ur answer....

1st ka chemical vs physical changes.

2nd ka reversible vs irreversible changes.

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Answer 2

Answer:

• Reversible change is when the substance can return back to it's original matter. Example- Water (Can be Solid,Liquid or Gas)
• While Irreversible change is when the substance has attained it's change and cannot return. Example-Cooked food.

• Chemical change is when a substance is changed chemically. Example- Change in Atomic number, Number of molecules added etc.
• Physical change is when a substance has only changed physically. Example- Again, Water (When it is kept in freezer, it becomes solid from being liquid and when kept in room temperature returns to liquid state.)