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    Investigating the Relative Atomic Mass of Lithium Background information I’m going to produce a piece of coursework, which determine the relative atomic mass of lithium. Two methods are going to be used to approximate the relative atomic mass of lithium. 1) In the first method the RAM (Relative atomic mass) of lithium is determined by the Volume of hydrogen gas produced. 2) In the second method the RAM of lithium is determined by titrating the lithium hydroxide produced. To

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    Determination of the Relative Atomic Mass of Calcium In this experiment, I will determine the relative atomic mass of calcium by two different methods. v By measuring the volume of hydrogen produced. v By titrating the lithium hydroxide produced. Method 1 -------- [IMAGE] v 0.10g of calcium used. v 100cm3 of distilled water used. Results Method 1 Mass of Calcium (g) Total volume of gas produced (cm3) 0.10 37 v Starting point of water in cylinder =

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    Determining the Relative Atomic Mass of Lithium An experiment has been carried out to determine the relative atomic mass of Lithium by using two different types of methods The first method that was carried out was to determine the volume of Hydrogen produced. In this experiment a fixed amount of Lithium was used, in my case it was 0.11g. At the end of this experiment, the volume of Hydrogen gas I collected was 185cm³. Then using the solution of lithium hydroxide made from experiment

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    Investigation to Determine the Relative Atomic Mass of Lithium Introduction My aim of this experiment will be to determine the R.A.M using two separate methods In the first method I will dissolve a piece of lithium of a known mass in water, I will then collect the hydrogen gas produced, which can be used to calculate the relative atomic mass of Lithium. The balanced equation of our reaction is shown below; [IMAGE]2Li + 2H2O 2LiOH + H2 In the second method I will do a titration

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    Determination of Relative Atomic Mass of Lithium Evaluation: In general the accuracy of the experiments was good. However with practice, the accuracy could be improved; accuracy being how close the results are to the real answer. I think I have carried pit the experiment as well as I possibly could at the time with the given conditions and time period allowed. I have gained precise results from the practical. However, looking back at the analysis section, the relative atomic mass values I found

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    The Structure of the Atom

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    [IMAGE] Basic Atomic Particles : Atoms are made up of the following particles : Protons : Protons are positively charged particles with a mass of one atomic mass unit. They are found in the nucleus at the centre of the atom structure. Neutrons : Neutrons are not charged and have a mass of one atomic mass unit. They are found, with protons at the centre of the atom. Electrons : Electrons are negatively charged particles with a mass of 1/1846th of an atomic mass unit. They are arranged

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    suggesting that the mass of an atom was it's most important property. In the nineteenth century Johann Döbereiner was the first to attempt to classify elements using their relative atomic mass. He also identified a number of ‘triads’ in the list of elements then known. Each triad was a set of 3 elements that have similar properties (e.g. Cl, Br and I; Ca Sr and Ba). In 1863, John Newlands noted that when the known elements were written in order of increasing relative atomic mass, every eighth

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    Scientific Principles

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    positive charge, electrons have a negative charge while neutrons are neutral and carry no charge. The only similarities, which 2 of the particles have, are protons and neutrons and their mass is equal to the mass of an atom of hydrogen. While scientifically we call this mass one atomic mass unit. The mass of an atom depends on the amount of protons and neutrons the atom contains and the arrangement of particles within the atom. The arrangement of the particles within an atom depend on how

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    grahams gas law

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    GAS LAWS KINETIC ENERGY/ GRAHAM’S LAW LAB Purpose: To observe how masses of atoms and molecules affect their rate of diffusion, and explain our observations in terms of mass, velocity, kinetic energy and temperature. Warm-up Question: 1.     What is the definition of temperature? Temperature is a measure of the average Kinetic Energy of the particles composing a material. 2.     What is the definition of diffusion? Diffusion is a spontaneous spreading of particles until they

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    Radon Gas Testing

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    its physical properties, its geographic distribution and origin, its health impacts and social costs, as well as directions for taking radon measurements. Where does radon come from? Radon gas forms when radium-226 (the number refers to the atomic mass of this particular form of radium) in soil and rocks decays radioactively. When an element, such as radium, decays it changes form, i.e., becomes a new atom, and releases energy in the form of light or fast moving particles which can be harmful

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    Xenon

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    Xenon Xenon is element number 54 on the periodic table of the elements. It has a mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in the nucleus of the atom. The symbol for xenon is Xe and it belongs to the family of elements called the noble gases. It is called a noble gas because the valance shell of one atom contains a full shell. Xenon is one of the most stable elements on the table. The 54 electrons are arranged, so that there are 2 in the 1st shell, 8 in the 2nd

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    An Investigation into the Atomic Mass of Lithium There are two methods that can be used to determine the atomic mass of a Group 1 metal. These are best described by the reactions that take place during these methods. Method 1: 2Li(s) + 2H20(l) è 2LiOH(aq) + H2 (g) For the first reaction, the equipment must be set up as detailed in the attached sheet. A mass of lithium must be taken and weighed, the results recorded. This mass is then to be added to the test tube, and the bung replaced

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    grayish metal that has been with us for thousands of years. That metal is lead, still one of the world's most useful substances, and one that never ceases to find a role in human society. Lead has the atomic symbol of Pb (for plumbum, lead in Latin). The atomic number for lead is 82 and the atomic mass is 207.19 AMU. It melts at about 327.502 oC and boils at 1740 oC. Lead is a heavy, ductile, soft, gray solid. It is soluble in nitric acid and insoluble in water. It is found in North, Central and South

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    Assimilation, Growth, Excretion, Regulation, Reproduction, Metabolism.CHEMISTRY BASICS *Atoms of the elements are the basic unit of mattter and are composed of protons, neutrons and electrons.*Atomic mass is the sum of the number of protons and nuetrons in an atom.*The number of protons and electrons is the same as the atomic number.*Isotopes of an element differ in the number of nuetrons,*The outer most electrons of an atom are called valence electrons and are evolved in chemical bonding.*Covalent bonds between

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    to the cathode, the mass of the anode to the cathode, the mass of the anode decreases whilst the mass of the cathode increases. I can support the point I've made above by faradays law which is: Faraday's Second Law of electrolysis states that: "The mass of an element deposited by one Faraday of electricity is equal to the atomic mass in grams of the element divided by the number of electrons required to discharge one ion of the element." Hypothesis: The mass of the anode should

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    What is the Legacy of The Carolina Theater Essential Questions: How can a landmark change over time and still be relevant? How does change happen to a landmark? How do citizens in the community influence change? Process: We started in Social Studies and by figuring your characterization of legacy and than that is how you begin to figure out what you believe legacy is for your landmark. We begin to plan our field trip and to visit the Carolina Theater, The Durham Athletic park, M&F Bank (Mechanics

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    atoms of low mass, which are initially attracted to each other, to form one atom of greater mass. When two atoms combine to form a single atom, they have fused. This fusing releases a large amount of energy with respect to the amount of mass and energy that was initially put into the reaction. This combination releases energy in the form of light and heat. Energy is created in a fusion reaction through the loss of atomic mass from the beginning to the end of the reaction. The mass of the two atoms

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    Biochemistry

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    either a mixture or a compound formed but polymerization and consisting essentially of repeating structural units such as a glucose molecule. Also an isotope is any of two or more species of atoms with the same atomic number and a similar chemical behavior but with a different atomic mass Biochemistry isn’t just about the elements it’s also about foods. There are many saturated and unsaturated fats in foods. Many most people don’t know about them. Amino acids are acids synthesized by living cells

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    zinc ore samples. An indigo line in the samples spectrum was found, and no element known had this colour in them it revealed the existence of a new element which was called Indium due to the bright coloured line in its spectrum. Characteristics Atomic Mass: 114.818 Melting Point: 429.75 K (156.60 C) Boiling Point: 2345 K (2072 C) Density: 7.31 grams per cubic centimetre State at Room Temperature: Solid Element Classification: Metal Period Number: 5 Group Number: 13 Occurrence In Nature Indium is

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    Chlorine

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    Chlorine Chlorine is (at room temperature) a greenish-yellow gas that can be readily liquefied at 5170 Tarr or 6.8 atmospheres, at 20 C (68 F), and has a very disagreeable odor. It’s Element Symbol is Cl, atomic number is 17, and atomic mass is 35.453. Chlorine’s melting point is -101 C or 149.8 F. The boiling point is -34.05 C or -29.29 F, at one atmosphere pressure. Chlorine is a member of the halogen group. Chlorine was discovered by Swedish scientist Karl Wilhelm in 1784, but he first thought

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