• Living Thing Cell Cells One
    4,633 words
    Living things make up the world as we know it. Living things are involved in our life constantly, seeing that we are alive. There are five characteristics that are common to all living things. Living things are made up of one or more cells. Each cell is made up of living matter and is separated by a barrier that encloses the cell from its surroundings. However, there are many different kinds of cells that make up living things. A single cell can be one organism. These organisms are known as uni...
  • Copper Atomic Number
    1,090 words
    Weil 1 Copper is one of the earliest elements known to man. Because of its distinct red color, Copper is very easily identified. In the ancient times, copper could be found lying in the ground in its unattached state without interaction to other substances. Copper and its compounds have many uses in today's society. Copper has many chemical properties that make it unique. The Atomic number of copper is 29. An Atomic number is a measure of the amount of protons in the nucleus of an atom. Protons...
  • Historical Development Of Atomic Structure
    1,237 words
    Historical Development of Atomic StructureYazan FahmawiSept. 30, 1995 T 3 IBS Chemistry Ms. Redman The idea behind the 'atom' goes back to the Ancient Greek society, where scientists believed that all matter was made of smaller, more fundamental particles called elements. They called these particles atoms, meaning 'not divisible.' Then came the chemists and physicists of the 16 th and 17 th centuries who discovered various formulae of various salts and water, hence discovering the idea of a mole...
  • Relative Atomic Mass Of Lithium
    1,024 words
    Determination of the relative atomic mass of lithium Aim The main aim if this coursework is to find the relative atomic mass of lithium. This is done using two methods. - By measuring the volume of hydrogen produced. - By titrating the lithium hydroxide produced. Amount of lithium given = 0. 09 gms Required Burette, pipette, 4 conical flasks, a bee-hive beaker, rubber tube, a measuring cylinder, a stand and goggles and a lab coat for safety. Method -1 "...
  • Atomic Mass Element Atoms Metals
    591 words
    Chapter Three Summary: Atoms and atom's structure Ancient Greek Philosophers suggested that matter was composed of individual particles, which was proved by the theory of John Dalton. The main provisions of his theory are: 1. All matter is composed of tiny, indivisible particles called atoms. 2. All atoms of a particular element are identical but the atoms of one element differ from the atoms of other element. 3. Atoms of different elements combine with each other in certain whole number propor...