Elements and compounds are a result of the actions of the valence electrons. There are three types of bonds that I have learned about in the bonding comparison lab. These bonds include ionic‚ polar covalent‚ and non-polar covalent. Each of these bonds and the element compounds connected to them has individual solubility‚ conductivity‚ melting point‚ and volatility levels. The three element compounds that will follow are sodium chloride‚ sucrose‚ and p-dichlorobenzene. Sodium chloride is an ionic
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constantly moving‚ the higher it’s temperature‚ the faster they move. All the particles are attracted to each other. The particles move faster and move further apart when heated‚ and the reverse when cooled. Each substance has unique particles that are different from the particles of other substances. Particle theory helps to explain the behaviour of materials by showing a model which allows us to All matter are made up picture what is happening inside those materials. Particles in each of the 3 states
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WORKSHEET FOR PURE AND MIX SUBSTANCES Which of the following methods can be used to separate salt from a mixture of salt and water? A. | | Filtration | B. | | Decantation | C. | | Evaporation | D. | | Sedimentation | Use the following information to answer the next question. The soil present in the backyard of Catherine’s house is very rocky and contains a lot of small rocks. Catherine wants to use this soil to pot some plants. However‚ she first wants to separate the rocky parts
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revision Atoms elements and compounds Atom-the smallest part of an element that can still be recognized as an element Element-a substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance Nucleus-middle of the atom‚ which contains protons and neutrons Electron-tiny particle‚ which surrounds the nucleus with a negative charge Compound-when two elements react and combine together which contain more than one element. There are about
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PROPERTY DIAGRAMS OF PURE SUBSTANCES SUBJECT : ENGINEERING THERMODYNAMICS CONTENTS: * Phase and pure substance * Properties of a substance * P-V diagram for a pure substance * P-T diagram for a pure substance * P-V-T surface * T-S diagram for a pure substance * h-s diagram for a pure substance Thermodynamic Properties * Characteristics by which physical properties of system may be described. e.g. pressure‚ volume‚ temperature‚ entropy‚ enthalpy etc
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How do ionic compounds form? How do electrons change the shape of a molecule? These are just a couple of the questions that this paper will answer. How do ionic compounds form? Ionic compounds are formed by positive and negative ions. An ionic bond means that there are valence electrons being shared between the two molecules. This can cause the molecule to become negative or positively charged. An ionic compound is formed by the complete transfer of electrons from a metal to a nonmetal and the
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We underwent two different reaction schemes using Dipotassium phosphate (K2HPO4) and Potassium hydroxide (KOH) to isolate the compounds of pure Acetylsalicylic Acid/Aspirin and N-(4-hydroxyphenyl) Ethanimidate/Acetaminophen respectively from Excedrin. The first reaction scheme to undergo acid-base organic extraction was to isolate the most acidic compound in Excedrin with a weak base‚ K2HPO4. We isolated the aspirin using aqueous base extraction‚ with Dipotassium phosphate then treated with HCl
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observations of hardness and melting points‚ how does the strength of van der Waals forces of attraction compare with the strength of the attractions between ions of opposite charge? Sodium Chloride has a much stronger force of attraction to the particles because there is no evident odor and seems to have a very high melting point as oppose to camphor which has a very strong‚ evident smell. 12. Water is a much more polar molecule than 2-propanol. How does the polarity of the liquid seem to influence
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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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In this ISP I will try and reveal how the Sires‚ new technology‚ economy‚ and work ethic have changed and produced the booming industry that there is today. To prove this tentative thesis I will map out when each of these factors commenced in the change and establish what one has had the greatest impact. I will then do this through old reports‚ articles‚ videos‚ and bull proofs. In doing this I hope to establish what one of many factors have impacted the most. The main points I will take into thought
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