Atoms, Molecules and Ions. AN ATOM is the smallest particle of an element. They cannot be split into smaller particles in chemical reactions. Iron is made of iron atoms (Fe). Sulphur is made of sulphur atoms (S) A MOLECULE is a small group of atoms joined together. The atoms may be the same (e.g. O2) or different (e.g. H2O). The chemical formula shows the number and type of atoms present. Non-metal compounds are made of molecules: Carbon dioxide contains CO2 molecules Methane (natural gas)
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enzyme: Catalase found in chicken liver. * The name of the organism is chicken (liver). * The substrate is hydrogen peroxide (H2O2)|. * Hypothesis: If the catalase in the chicken liver is exposed to hydrogen peroxide, it will cause a chemical reaction. This reaction will result in the destruction of hydrogen peroxide in the chicken liver, which is harmful to the cells; the enzyme catalase works best in acidic solutions and enzymes are denatured in very high temperatures (boiling).
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In 1789, Antoine Lavoisier published a list of 33 chemical elements, grouping them into gases, metals,nonmetals, and earths.[42] Chemists spent the following century searching for a more precise classification scheme. In 1829, Johann Wolfgang Döbereiner observed that many of the elements could be grouped into triads based on their chemical properties. Lithium, sodium, and potassium, for example, were grouped together in a triad as soft, reactive metals. Döbereiner also observed that, when arranged
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MACROSCALE SYNTHESIS OF ACETYLSALICYLIC ACID 1Alleyromae O. Indong, 2Aldrin M. Pragacha, 3Vince Neil B. Balaguer 1Department of Physical Sciences, College of Science, Polytechnic University of the Philippines, Sta. Mesa, Manila, Philippines Date Performed: December 3, 6, 2014 Date Submitted: December 17, 2014 Abstract Acetylsalicylic acid or Aspirin is an analgesic, anti-inflammatory and antipyretic agent. It was synthesized to alter the corrosive nature of Salicylic acid that causes gastric
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Corporate Level Strategy: SIPCHEM identified its vision which state as "Challenging assumption every day to discover and develop responsible solution, enhancing quality of life for generation to come". The mission of SIPCHEM is "To grow our capability and reach by constantly pushing the boundaries that inspire, enhance and sustain excellence". The vision and the mission of SIPCEM give us idea of how the company sets its strategy and plan to achieve its objectives. SIPCHEM sets its strategy depending
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PMB 103: METABOLISM: BASIC CONCEPTS AND DESIGN Definition of terms; metabolism, bioenergetics and thermodynamics. * Laws of thermodynamics, free energy changes and standard free energy changes in biochemical reactions. * Phosphoryl group transfers and ATP; * Free-energy change for hydrolysis of ATP and other phosphorylated compounds and thioesters. * Role of ATP: phosphorylation, * pyrophosphorylation and adenylation, * assembly of informational macromolecules,
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period 3, group 18 of the periodic table. It’s a noble gas. It has 18 electrons and protons, and 22 neutrons. Argons electron configuration is 1s22s22p63s23p6. Argon is a colorless, odorless gas present in the atmosphere. It’s known to not form true chemical compounds. It’s heavier than air, but less reactive than N2. Argons atomic number is 18, its mass number is 39.948, it has 8 valence electrons, it’s molar mass is 39.95, it’s ionization energy is very high, but still less than neon, it’s melting
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Practical Biodiesel Abstract During the biodiesel practical in the labaratorium we used the following materials: an erlenmeyer, a spatula, a funnel, a heater, a graduated cylinder, a reflux condenser, a beaker, a lab lift, a round bottem flask and a stirring bullet. All these materials were placed in a fume hood. The most appropiate testresult that we could get from this experiment, is a biodiesel with a flashpoint above 130 °C and
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Table of Contents Partial table of contents: Carbon Compounds and Chemical Bonds. Representative Carbon Compounds. An Introduction to Organic Reactions: Acids and Bases. Alkanes and Cycloalkanes: Conformations of Molecules. Stereochemistry: Chiral Molecules. Alkenes and Alkynes I: Properties and Synthesis. Alkenes and Alkynes II: Addition Reactions. Radical Reactions. Alcohols and Ethers. Conjugated Unsaturated Systems. Aromatic Compounds. Reactions of Aromatic Compounds. Aldehydes and Ketones I:
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CN5010 Mathematical Methods in Chemical and Environmental Engineering Modular Credits: 4 Workload: 3-0-0-1-6 Prerequisite(s): Nil Preclusion(s): Nil Cross-listing(s): Nil This module is targeted at postgraduate students, who are interested in process modelling and simulation for various chemical and environmental engineering processes. The course covers both analytical and numerical techniques in solving the associated algebraic as well as differential equations. Analytical methods such
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