Four methods for separating mechanical mixtures：
Filtration: This method is used to separate solid particles from liquids or gases. It involves passing the mixture through a filter that allows only the liquid to pass through while trapping the solid particles. An example is using a coffee filter to separate coffee grounds from brewed coffee.
Centrifugation: This process uses centrifugal force to separate substances of different densities. When the mixture is spun at high speed, the denser substances move outward to the bottom while the lighter substances remain above. This is often used in laboratories to separate blood components.
Decanting: This technique involves carefully pouring liquid away from solids that have settled to the bottom of a container. For example, if you mixed sand with water, you would allow the sand to settle and then pour the water out.
Gravity filtration: Similar to standard filtration, gravity filtration uses gravity to separate solids from liquid. Water is poured through filter paper in a funnel, allowing the liquid to pass through while leaving the solids in the filter. An example is filtering vegetable soup to remove solid vegetable debris.
