Water • Define the terms solute‚ solvent and solution • Solute: Substances dissolved by the solvent (or the component present in a lower amount) • Solvent: Substances in which solutes are dissolved (or the component present in a larger amount) • Solution: A homogenous mixture of 2 or more substances • 1.1.2. Identify the importance of water as a solvent. • Water is distributed in the biosphere‚ lithosphere‚ hydrosphere and atmosphere • On earth‚ it is distributed as a solid‚ liquid and gas
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Chapters 7&8 Gauge Sheet 7.1- Ions To find the number of valence electrons in an atom of a representative element‚ simply look at its group number. Atoms of metals tend to lose their valence electrons‚ leaving a complete octet in the next-lowest energy level. Atoms of some non-metals tend to gain electrons or to share with another non-metal to achieve a complete octet. The gain of negatively charged electrons by a neutral atom produces an anion. 7.2- Ionic Bonds and Ionic Compounds Although
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Percent Composition Report Hypothesis : By using seperation techniques properly‚ the 3 substance such as; water‚ sand‚ and salt can be seperated and the percent composition of each substance. Which will then be calculated theoritically and after comparison with the actual result‚ the accuracy of the 2 result can be found. Aim : The aim of this experiment is to compare the gravimetric result of the original mixture and the separated substance. The other objective is to calculate each percent
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COMPOUND- a substance made of two or more types of atom chemically joined together ELEMENT- a substance made of only one type of atom MIXTURE- a combination of two or more elements in a way that allows each element to keep its own chemical identity. All substances are made up of atoms Elements contain only one type of atom Different atoms can bond together by giving/taking/sharing electrons‚ to form compounds. Atoms are made up of a tiny central nucleus surrounded by electrons 1.2 Limestone and
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Investigation – Storage conditions of Bleach & it’s relation with temperature. Title/Research Question: ‘How does temperature effect the concentration of chlorate ions in bleach?’ Aim: The aim of this experiment was to investigate the optimum temperature storage conditions of bleach’s stored at different temperatures. Introduction: Chlorine bleaches are made by dissolving chlorine in sodium hydroxide solution. They have a number of uses as they are used to remove colors‚ whiten or disinfectant
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An investigation to show how the rate of reaction between hydrochloric acid and sodium thiosulphate is affected by the concentration of the acid Simple Procedure Place a conical flask on a piece of paper with a cross on it. Add hydrochloric acid and sodium thiosulphate‚ and record the amount of time taken for the cross to disappear through the solution from the top of the flask. Record this time and repeat this for different concentrations of hydrochloric acid. Fair Test The variables in
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CHEM 101 – General Chemistry I Chapter 2 Reading Assignment Pages 31 - 60 2.1 – What is Matter Made Of? Who 1st discovered atoms – Democritus where the first person to discover atoms. His followers would often think that there were multiple kinds of atoms and not just plain atoms. 2.2 – How Do We Classify Matter? Elements – A substance that consists of identical atoms. Today there are 116 known elements. Example – C= Carbon; H= Hydrogen Compounds – A pure substance made up of two or more elements
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today’s generation is individualistic. That is why‚ Dostoyevsky wrote the novel “Notes from Underground” about what was happening to him and society. Everyone has a desire to be perfect‚ and be very common between each other. People should be open minded to discover new things. Most people are not as open minded‚ they do not think broad enough and are selfish. Everyone’s perspective is different from the novel “Notes from Underground” than what Dostoevsky thought it would be. People think it was fantasies
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Structure determination (Unit 4) Organic synthesis Organic Laboratory Technique (Unit 1) Organic Laboratory Technique (Unit 2) Organic Laboratory Technique (Unit 3) Organic Laboratory Technique (Unit 4) Reference Reading from Solomons‚ Organic Chemistry 6th edition 90-93‚ 96-101 102-118‚ 320‚ 433-434‚ 795-796‚ 903-905‚ 970-972 59-61 178-185‚ 188‚ 193-198‚ 200 41-47‚ 65-75‚ 128-137‚ 284-286‚ 288-289‚ 415-417‚ 615-617‚ 705-706‚ 792-793‚ 797-800‚ 899-900 87-90‚ 94-96 224-233‚ 238-252‚ 256-259 260 913-914
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The Essence of Chemistry & Significant Contributors to scientific development | 1 HONORS CHEMISTRY Introduction to Chemistry Notes Make sure you can understand these basic questions and concepts so that you can build on the basics to understand the complex material These are just the basics of what is covered in class lectures. This should not be the only resources you use to study. Who developed the concept of atoms? What are atoms? What is the Law of conservation of mass? What is the law of definite
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