UNIT 1 MATTER‚ CHEMICAL TRENDS AND CHEMICAL BONDING UNIT 1 MATTER AND CHEMICAL BONDING 1.1 The Study of Chemistry Chemistry is the study of matter and its properties‚ the changes (chemical‚ physical‚ and nuclear) that matter experiences‚ and the energy that is associated with these changes. The term STSE refers to science‚ technology‚ society‚ and the environment. These four areas are
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Experiment No. ___________________ Date ___________________ NEUTRALIZATION TITRATIONS INTRODUCTION The neutralization of hydronium or hydroxide ion to form water is widely used as the basis for volumetric determinations of acids‚ bases and salts of weak acids. The reaction is characterized by a rapid change in pH near the equivalence point‚ a change that is readily detected by an acid-base indicator or that can be followed electrically by use of a pH meter. Neutralization titrations
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BACK TITRATION- DETERMINATION OF THE CARBONATE CONTENT IN GARDEN LIME NAME: OSEI BONSU ERIC ID: 3906409 EXPERIMENT: I.2.2.1.
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Common Name: Pearl Scientific Name: Calcium Carbonate Formula: CaCO3 Fundamental particles: Pearls are comprised of a positive Calcium ion (Ca+) and a negative Carbonate polyatomic ion (CO3+) Usage: Jewelry Properties: Pearls are good jewelry because they are hard and lustrous. Pearls are hard because of the strong Intermolecular forces created between the Calcium and the Carbonate ions. The pearls luster is dependent on the amount of nacre excreted. The Oyster produces nacre when
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materials. -Part B: Record all observations of Part B in Data Table 2 6. Mix iron filings and sulfur on clean paper. Examine mixture with magnifying class. Test effect of magnet. Give this mixture to teacher for further use in Part C. 7. Mix sodium chloride and sand on clean paper. Examine mixture with magnifying glass and test effect of magnet. 8. Transfer salt-sand mixture into 100mL beaker‚ then add 30mL of water and stir. Record observations‚ and then prepare for filtration setup. Filter
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1. A 15‚67g sample of hydrate of magnesium carbonate was carefully heated‚ without decomposing the carbonate‚ to drive off the water. The mass was reduced to 7.58g.What is the formula of the hydrate? (10) 2. Construct balanced equations (including state symbols) to describe the following reaction: Potassium metal reacts with water to form potassium hydroxide solution and hydrogen gas (dihydrogen). (8) 3. Anhydrous lithium perchlorate (4.78g) was dissolved in water and recrystallized. Care was taken
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Reaction Types In this lab we were give 9 different elements and had to determine if they were Single Displacement‚ Double Displacement‚ Synthesis‚ Decomposition and Combustion. A.) Aluminum and Copper (II) Chloride‚ my hypothesis is a Single Displacement. B.) Calcium Carbide and Water‚ my hypothesis is a Double Displacement. C.) Zinc and Hydrochloric Acid‚ my hypothesis is a Single Displacement. D.) Alcohol and Oxygen‚ my hypothesis is a Combustion. E.) Lead (II) Nitrate and Potassium Iodide
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German names. – Ex: Tungsten (W = Wolfram)‚ Sodium (Na = Nadium)‚ Gold (Au = Aurum)‚ Potassium (K = Kalium)‚ Lead (Pb = Plumbum)‚ etc. • Each of the more than 110 elements that we know of is unique and has different properties from the rest. • Compounds are pure substances made of atoms of two or more different elements that are chemically combined. – Ex: Water (Hydrogen and Oxygen)‚ Nylon (Carbon‚ Hydrogen‚ Nitrogen‚ and Oxygen)‚ Table Salt (Sodium and
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The effect of temperature on a reaction rate In this experiment I shall be investigating how temperature affects the rate of reaction Rates of reaction The Factors that affect the rate of reaction are temperature‚ surface area‚ concentration‚ catalysts‚ light and pressure Surface area – Surface area is the amount of solid surface that is available for reaction - Only affects solids so this will not affect our
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Contaminated with small amounts of one or more other substances Elements: Pure substances which cannot be decomposed into simpler substances Compounds: Pure substances which can be decomposed into simpler substances 2 or more elements E.g. Table salt (sodium chloride)‚ water and elements. Atoms: The particles that make up elements An atom is the smallest particle of an element which is still recognisable as that element. A molecule: Smallest particle of a substance that is capable of separate existence
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