Flame test: AIM: To determine which part of the salt is responsible for the characteristics in the flame. HYPOTHESIS: If we introduce a metal salt in the blue flame of the Bunsen burner‚ then the colour given off by the flame is due to the metal part of the salt. METHOD: (1) With a heat proof mat under the Bunsen burner‚ turn the gas on and light up the Bunsen burner with matches. (2) Pour enough Hydrochloric acid into a beaker. (3) Using your wire‚ dip it into the beaker containing Hydrochloric
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functional group or molecule for each of the following. (3 points) 1. COOH -OH 2. COH -OH 3. COH -OH 1. List whether each of the following substances was positive or negative for reducing sugar‚ as indicated by the Benedict’s test. (6 points) 1. corn syrup (1 point) positive 2. table sugar (1 point) positive 3. unknown 1 (1 point) negative 4. unknown 2 (1 point) negative 5. unknown 3 (1 point) positive 6. unknown 4 (1 point) positive 1
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Hydrogen and the Noble Gases Hydrogen is the chemical element with atomic number 1. It is represented by the symbol “H”. It is an odorless‚ nonmetallic‚ tasteless and highly explosive gas. Hydrogen is the lightest and most abundant chemical element in the universe. It forms 1- ions when combined with metals‚ and 1+ ion when combined with non-metals to form acids. Hydrogen is “the fuel of life”; without it to combine with oxygen we would not have water. Water is made of two parts hydrogen
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Intro AN Molecule AD What happens during cytokinesis? CA Molecular level AD Animal and plant cell difference CA History RE Uses RE Conclusion Bibliography INTRO: Cytokinesis is the last process in the eukaryotic cell division and is the process that divides one cell into two daughter cells. Occurs in the end of mitosis after telophase. It signals the start of a new cellular generation. The cytoplasm needs to be separate to create the to new cells. Different phases can be seen in the cytokinesis
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Alloy - An alloy is a substance made by melting two or more elements together‚ at least one of them a metal. An Example: Examples of alloys include brass‚ bronze‚ 14k gold‚ and sterling silver. covalent bond - A covalent bond is a chemical link between two atoms in which electrons are shared between them. An Example: There is covalent between the oxygen and each hydrogen in (H 2 O). Each of the bonds contains two electrons - one from a hydrogen atom and one from the oxygen atom. Both atoms
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"To See What Factors Affect The Decomposition Of Hydrogen Peroxide By The Enzyme Catalase Which Is Found In The Liver" Introduction: Enzymes are biological catalysts. They speed up the chemical reactions which go on inside living things. Without them the reactions would be so slow that life would grind to a halt. Enzymes work by when a substrate molecule bumps into a molecule of the right enzyme‚ it fits into a depression on the surface of the enzyme molecule. This depression is called the
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FIELD WORK TITLE FIELD WORK TITLE Two peg test INTRODUCTION INTRODUCTION Two Peg Test is a surveying operation carried out to determine whether the leveling bubble and telescope line of sight are parallel. OBJECTIVE OBJECTIVE Peg Test is a surveying operation carried out to determine if the leveling bubble (bubble axis) and telescope line-of-sight (line of collimation) are parallel. TOOLS TOOLS Dumpy level Tripod
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In “Generation Why?” article from The New York Review of Books‚ Zade Smith pointed out the software are changing our humanities. Facebook is providing the “weak‚ superficial connections” (650). On the social networking software‚ “Gay kids became un-gay‚ partiers took down their party photos‚ political firebrands put out their fire” (651)‚ users can hide themselves by editing their information and utilizing the privacy setting. The Generation Facebook is obsessed with “the vision of good life” (648)
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Hydrogen has a high specific energy‚ high flame speed‚ wide range of flammability‚ and clean burning characteristics which suggest a possibility of high performance in internal combustion engines (ICE). These attributes have been realized for more than half a century since the onset of hydrogen engine development. In the early 1990s‚ FSEC conducted research on using hydrogen in an ICE. This work resulted in the development of a mixed fuel called HYTEST. Today‚ automobile manufacturers and DOE continue
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For reasons of data protection and privacy‚ your IP address will only be stored if you are a registered user of Facebook and you are currently logged in to the service. For more detailed information‚ please click on the "i" symbol. Biochemist Dan Robertson’s living gas stations have the dark-green shimmer of oak leaves and are as tiny as E. coli bacteria. Their genetic material has been fine-tuned by human hands. When light passes through their outer layer‚ they excrete droplets of fuel. "We had
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