Unit 2 Definitions

Question 1

Mixture

Answer 1

material made up of 2 or more different substances which are. mixed but are not combined chemically.A mixture refers to the physical combination of 2 or more substances on which the identities are retained, ex) sandesalt, sugar, flour.

Question 2

Compound

Answer 2

• a substance when two or more chemical elements are chemically bonded together. Ex. Sodium metal and chlorine gas combine to form sodium chloride.

Question 3

Homogeneous

Answer 3

Homogeneous- a mixture of which has uniform composition and properties throughout ex. Air is a homo mixture of gasses, brass is a homo mixture of copper.

Question 4

Heterogeneous

Answer 4

Heterogeneous -a mixture having a non uniform composition. the composition varies from one region to another, ex) soil, blood, or salt and gravel

Question 5

Solutions

Answer 5

Solutions- are homogeneous mixtures, composed of two on more substances

Question 6

Aqueous solution

Answer 6

aqueous Solution - a solution of Some substance dissolved in water. (ag)

Question 7

Solute

Answer 7

solute - a substance dissolved in another substance, Known as a solvent

Question 8

Solvent

Answer 8

solvent - a substance that dissolves a solute la chemically distinct liquid, solid or gas) resulting in a solution. A solvent is usually a liquid but can also be solid or a gas ex) solution: solid in liquid: sea water Solute: salt solvent: water.

Question 9

Soluble

Answer 9

Soluble - capable of being dissored, specially easily dissolved in some solvent (usually H2O)

Question 10

Insoluble

Answer 10

insoluble - Incapable of being dissolved in some solvent usually H2O

Question 11

Solubility

Answer 11

Solubility - a chemical property referring to the ability, for a given substance,the solute, to dissolve in a solvent, it’s measured in terms of the maximum amount of a solute dissolved in a solvent at equilibrium.

Question 12

miscible

Answer 12

miscible - Capable of being mixed (alcohol is miscible with water)

Question 13

Immiscible

Answer 13

immiscible - not capable of mixing together. (Oil is immiscible with water)

Question 14

Dilute

Answer 14

dilute - a solution combining a relatively small quantity of solute as compared with the amount of solvent. It can also mean to make a liquid weaker or thinner by adding water or some other solvent to it.

Question 15

Unsaturated

Answer 15

unsaturated - a chemical solution containing less than the max concentration of a solute dissolved in the solvent. Additional solute can dissolve in an unsaturated solution.

Question 16

Saturated

Answer 16

Saturated - a chemical solution containing the max concentration of a solute dissolved in the solvent. Additional solute will not dissolve in a saturated solution.

Question 17

Supersaturated

Answer 17

supersaturated - a solution with more dissolved solute than the solvent would normally dissolve in its current conditions (such as temp) Saturation.
•to form a SUP solution, dissolve enough solutes into the solvent to reach the Sp, then cool the solution.

Question 18

Precipitate

Answer 18

precipitate - an insoluble solid that emerges from a liquid solution. They usually. form when reactions produce salts with low solubility products.

Question 19

Disassociation

Answer 19

dissociation - a general process in which molecules (or ionic compound such as salled Seperate or split into smaller particles such as atoms, ions or radicals, usually reversible manner.