4.what material passes through a hole of a strainer when sieving is used to separate mixtures? 5.what is the diffrence between sieving from filters?
Answer (1)
When sieving is used, finer particles pass through the holes of the strainer while larger particles are retained on top. The key difference between sieving and filtering lies in the nature of the separation: sieving separates based on particle size, while filtering separates based on particle size and other properties, like solubility or even chemical reactivity. Elaboration:1. What passes through a strainer during sieving:Sieving utilizes a mesh or screen with specific hole sizes. When a mixture is poured over the strainer, particles smaller than the mesh openings will pass through, while larger particles will be blocked and remain on top. For example, when sieving flour, the fine flour particles will pass through the sieve, while larger clumps or impurities will be left behind. 2. Differences between sieving and filtering:Mechanism:Sieving separates based on particle size; particles smaller than the holes pass through, and larger particles are retained. Filtering, on the other hand, can separate based on particle size, but also on other properties like solubility, porosity, and even chemical reactivity. Materials:Sieving is commonly used for separating solid particles from other solid particles. Filters are used to separate solids from liquids, or to separate different phases (e.g., gas from liquid). Filter Types:Filters can be composed of various materials like filter paper, membranes, or even specialized materials with complex pore structures. These filters create a tortuous path that can trap particles of different sizes and other properties, making the separation more intricate. Examples:Sieving is used in situations like separating sand from pebbles, or flour from lumps. Filtering is used in situations like separating tea leaves from tea liquid (using a tea strainer), or removing impurities from water.
