Question

II. Define the following terms: 1. Sieving 2. Sediment 3. Supernatant liquid 4. Evaporation 5. Centrifugation​

Answer 1

Explanation:

1.A sieve, fine mesh strainer, or sift, is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, using a screen such as a woven mesh or net or perforated sheet material. The word "sift" derives from "sieve"

2.Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles.

3.The supernatant is the clear liquid that lies above the solid residue after centrifugation, precipitation, crystallization or settling. The liquid is normally free of precipitate and has a lower density. ... Supernatant is also known as supernate.

4.Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other.

5.Centrifugation is a technique that helps to separate mixtures by applying centrifugal force. A centrifuge is a device, generally driven by an electric motor, that puts an object, e.g., a rotor, in a rotational movement around a fixed axis. ... Pelleting is the most common application for centrifuges