Essays Tagged: "Ion"

Metallic and Ionic bonding.

into a wire-Exihibit a range of melting and boiling temperatures-Generally have high densitiesExceptions in metals:-Mercury ? liquid at room temperature, unusually low melting point.-Chromium ? brittl ... r more of outer shell (valence) electrons into a common pool within lattice. Atom is now a positive ion.Metallic bonding model-The only particles that are small enough to move through a solid lattice ...

(5 pages) 46 0 2.0 Sep/2003

Subjects: Science Essays > Chemistry

Year 12 Chemistry Preliminary Assessment Task 2: The Chemical Earth And Metals

You work for an aeronautical company who wants to stay ahead of the compettion and find out as much as they can about the historical and current use of metals. This knowledge ... ls should be used for the different jobs. Your boss has asked you to find out the following information:Outline the use of a metal based on the properties of hardness, malleability and reactivity:Copp ... metal to be used by humans. The period in which copper was readily used was regarded as the transition from the Stone Age into the copper age. This was a very important time in our history.In the ear ...

(11 pages) 80 0 4.8 Jun/2004

Subjects: Science Essays > Chemistry

What Is Electrolysis

ElectrolysisIn archaeological conservation, a cleaning process, especially of material from underwater archaeology, involving immersing the ... pecially of material from underwater archaeology, involving immersing the object in a chemical solution and passing a weak current between it and a surrounding metal grille. Corrosive salts move slowl ... ct (cathode) to the grille (anode), leaving the artefact clean.ElectrolysisIn chemistry, the production of chemical changes by passing an electric current through a solution or molten salt (the electr ...

(1 pages) 23 0 3.0 Jul/2004

Subjects: Science Essays > Physics

Splitting of d-Orbitals

Complex ions consist of a metal ion surrounded by anions or molecules known as ligands. Unlike most metals, ... sist of a metal ion surrounded by anions or molecules known as ligands. Unlike most metals, complex ions form dative bonds, rather than the usual ionic bonds. A dative bond is similar to a covalent bo ... d, but rather than forming a bond with one electron from each atom, the bond is created by the donation of a pair of electrons by one atom or ion. Ligands that have these lone pair electrons behave li ...

(6 pages) 22 0 0.0 Apr/2005

Subjects: Science Essays > Chemistry


Investigation to find out the Effect of Current on the Mass Deposited at the CathodeThe experiment I will be c ... o observe the amount of Copper (Cu) metal deposited during the electrolysis of Copper Sulphate solution (CuSo4) using Copper electrodes, when certain variables of controlling the current, maybe with a ... the change in temperature, so that it can be monitored. I also could have kept the size and separation of the electrodes the same. I also could have made sure that the crocodile clips were completely ...

(13 pages) 40 1 3.0 Sep/2005

Subjects: Science Essays > Chemistry

The application of Electrolysis?

Chemistry EssayName: Vineet BaldwaGrade: 10CQ. Write an essay on the application of Electrolysis?IntroductionBefore we go into the details of the application of electrolysis, we ... ed from the two words "Electro" meaning electricity and "lysis" meaning analysis which means separation. So just be finding the root of the word, we can understand what it means. Electrolysis means th ... means the splitting of compounds using electricity.ElectrolysisElectrolysis is the splitting up of ionic compounds into their constituents using an electric charge. However for this, the salt has to ...

(6 pages) 12 0 0.0 Nov/2007

Subjects: Science Essays > Chemistry


� PAGE \* MERGEFORMAT �28� | Page Temperature change in solution relative to concentrationAimThe aim of this experiment is to find out how the amount of salt in ... ature change during dissolving of the salt. To find out - is the temperature change directly proportional to the amount of salt? If so, is there a constant of proportionality with which one can make a ... unt of salt? If so, is there a constant of proportionality with which one can make an accurate equation? This equation could be used to work out how much the temperature of the water would lower by kn ...

(34 pages) 2 0 0.0 Oct/2014

Subjects: Science Essays > Chemistry