Argon (Ar) is a noble gas found in Group 0 on the periodic table. It gets its name because of its chemical inertness and comes from the Greek root ‘Argo‚’ which means lazy. This is because Argon doesn’t react well with other elements. The atomic number of Argon is 18 making it a member of the helium group of elements which are also called noble‚ or inert‚ gasses and are non reactive. Its electronic configuration is: 1s2 2s2 2p6 3s2 3p6 The outermost shell‚ shell number three‚ has a completely
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the components of mixtures using different temperatures. c. fossil fuels ______4. It consist of paraffin wax‚ beeswax mixed with coal tar-dye. d. foot powder ______5. The protein where sulfanilamide was synthesized e. fractional distillation ______6. It is a preparation of soap‚ tragacanth‚ and glycerin to soften the skin f. chemotherapy ______7 . Compounds which fasten dyes g. lanolin ______8. Wool grease from sheep h. mordants ______9.
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CHAPTER I INTRODUCTION Pollution is one of the main problems the world faces today. One of the reasons is the overload of non-biodegradable objects like plastics‚ cans and Styrofoam. The invention of plastics and Styrofoam made a huge change in our society and it helped us in many ways. But it is also one of the main pollutants that destroy our planet. Because of these we devised a way to recycle used Styrofoam‚ and this is to make glue out of it. This glue can help reduce the number of Styrofoam
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Claire Drexler P2 Characteristics Used To Identify a Substance 1. We use chemical and physical properties to identify a substance. 2. Examples of physical properties: color‚ smell‚ freezing point‚ and viscosity 3. Examples of chemical properties: heat of combustion‚ PH‚ and electromotive force Physical Properties vs. Chemical Properties 1. Examples of physical properties: density‚ luster‚ and conductivity 2. Examples of chemical properties: reactivity with water‚ PH‚ and heat of combustion
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Final Organic Study Guide: Be able to develop an Experiment Beginning to End * Find a good reaction * Good reaction is defined by high yield‚ green chemistry (less waste‚ less harmful chemicals) * Reaction found on Reaxys * Find MSDS Sheet for all Compounds (Reactants‚ Products and Side Products) * It is important to know what you are working with * The toxicity category numbers are there to gauge how toxic the chemical is‚ 4 being most severe and 1 being least
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REACTIONS OF HYDROCARBONS Vanessa P. Manibpel De La Salle University - Dasmariñas ABSTRACT Five substances namely Hexane‚ Eugenol‚ Unknown hydrocarbon 1‚ Unknown hydrocarbon 2‚ and Acetylene gas was used for the selective reactivity of hydrocarbons to functional group tests; Bayer’s test‚ Bromine test light‚ Bromine test dark‚ and Tollen’s test. In Bayer’s test‚ only Acetylene‚ Eugenol and Unknown hydrocarbon 2 reacted positively and the rest retain the purplish color of KMnO4. On the other hand
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AQA GCSE Chemistry Unit 1 C 1: Fundamental ideas: C 1.1. Atoms‚ elements and compounds: * All substances are made up of atoms. * Elements contain only one atom. * Compounds contain more than one atom. * An atom has a tiny nucleus in its centre‚ surrounded by electrons. C 1.2. Atomic structure: * Atoms are made up of protons‚ neutrons and electrons. * Protons and electrons have equal and opposite electrical charges. Protons are positively charged‚ and electrons are negatively
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Changes to the Earth and its atmosphere (http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/oils/changesrev1.shtml) Our changing planet 1 a Match a word from the list with each of the labels A‚ B‚ C and D on the diagram of the Earth. atmosphere core crust mantle [pic] A= core B= mantle C=crust D=atmosphere (4) b From which parts of the Earth do we get all of our raw materials? A atmosphere‚ core and crust B atmosphere‚ crust
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Term 1 - Summative Assessment Science (Theory) Question Paper Set - 1 Time: 3 to 3 ½ hours Max. Marks: 80 Instructions: 1. The question paper consists of two sections‚ A and B. You are to attempt both the sections. 2. All questions are compulsory. 3. There is no overall choice. However‚ internal choice has been provided in all the three questions of five marks each. You have to attempt only one option in each question. 4. All questions in Section A and all questions in Section B are to
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IS MATTER AROUND US PURE matter Pure substance Element Compound Mixture Homogenous Heterogeneous colloid Suspension True solution MATTER Everything in the Universe is made up of MATTER PURE SUBSTANCE The substance which contains same kind of Atom or Molecule i] element A pure substance which contain same kind of Atom ii] compound A pure substance which contain same kind of Atom or Molecule but made up of different Atoms through a Chemical bound Mixture Mixture are constitutor
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