* Formation of a precipitate: When silver nitrate and salt water are mixed, a white precipitate of silver chloride (AgCl) forms. This precipitate is a solid that is not soluble in water.
* New substance formed: The formation of silver chloride is evidence that a new substance has been created. This is a key characteristic of a chemical change.
* Chemical reaction equation: The reaction can be represented by the following chemical equation:
AgNO₃(aq) + NaCl(aq) → AgCl(s) + NaNO₃(aq)
This equation shows that the reactants (silver nitrate and salt water) are transformed into different products (silver chloride and sodium nitrate).
Physical changes involve changes in the state or appearance of a substance, but not its chemical composition. Examples include melting ice, boiling water, or cutting paper.
