Seperating Technique

Question 1

mixtures are

Answer 1

A mixture is a form of several substances that are not chemically joined together, just mixed up.

Question 2

Why we may wish to separate mixtures

Answer 2

Sometimes the individual pure substances are more important than the mixture. … Hence, we need to separate both from each other.This separation of substances is necessary to obtain pure substances for domestic purposes, industrial purposes and research work.

Question 3

Difference between solution and solubility.

Answer 3

Dissolution, or solvation, is the process by which a solute interacts with and becomes dissolved in a solvent due to an increase in stability. Solubility is maximum amount of solute that will dissolve in a given solvent at a given temperature to form saturated solution.

Question 4

Solute

Answer 4

The substance that dissolves is called the solute.

Question 5

solvent

Answer 5

The mixture formed by a solvent and solute is called a solution.

Question 6

Solution

Answer 6

The components of a solution are mixed together completely and do not separate out.

Question 7

Filtration

Answer 7

Filtering separates a liquid from an insoluble solid or a solution from a solid mixed up but not dissolved

Question 8

Evaporation

Answer 8

Separates solids from liquids

Question 9

Distillation

Answer 9

Distillation is a process that uses evaporation and condensation to obtain a solvent from a solution.

Question 10

Chromatography

Answer 10

Separating dissolved solids – chromatography. Paper chromatography is a method for separating dissolved substances from one another. It is often used when the dissolved substances are coloured, such as inks, food colourings and plant dyes.

Question 11

What is Chromatography for

Answer 11

Chromatography is used in industrial processes to purify chemicals, test for trace amounts of substances, separate chiral compounds and test products for quality control.Chromatography is the physical process by which complex mixtures are separated or analyzed.

Question 12

How does distillation work

Answer 12

Water in the salt solution boils, steam leaves the solution, steam travels through the condenser, and cools down, the steam condenses to form a liquid, pure liquid drips into the beaker.

Question 13

Slouble (solubility)

Answer 13

Solubility is a measurement of how much of a substance will dissolve in a given volume of a liquid. The liquid is called the solvent. The solubility of a gas depends on pressure and temperature.

Question 14

Insoluble

Answer 14

An insoluble is what can not be dissolved by the solvent and is left behind.

Question 15

Saturated (chemistry)

Answer 15

A saturated substance is one in which the atoms are linked by single bonds. A fully saturated compound contains no double or triple bonds. Alternatively, if a molecule contains double or triple bonds, it is considered to be unsaturated.

Question 16

What is fractional distillation?

Answer 16

Separating a liquid from a mixture – fractional distillation. Fractional distillation is a method for separating a liquid from a mixture of two or more liquids.

Question 17

What is the difference of fractional distillation and simple distillation?

Answer 17

The difference between simple and fractional distillation is the number of times that the liquid is vaporized and condensed. Simple distillation condenses the liquid once, so the boiling points of the two liquids must be far apart to make it efficient.