* Homogeneous Mixture: A mixture where the components are evenly distributed throughout, and the mixture has a uniform composition. You can't distinguish the individual components.

* Heterogeneous Mixture: A mixture where the components are not evenly distributed, and you can easily see the different parts.

When you dissolve silver nitrate (AgNO₃) in water, the silver nitrate ions (Ag⁺ and NO₃⁻) disperse evenly throughout the water molecules. You end up with a clear solution, which means it's a homogeneous mixture.