Chapter 1: Introduction Chapter 1: Introduction Ionic liquids (ILs) can be viewed as a new and remarkable class of solvent. They are also a type of materials that have a long and useful history‚ where the earliest material that meets the current definition of IL was observed in the mid-19th century when a separate liquid phase called the “red oil” was observed in Friedel-Crafts reaction [17]. Over the following years‚ there has been a rapid growing of interest in ILs due to the realization
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[pic] Soap From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Soap (disambiguation). [pic] [pic] A collection of decorative soaps‚ often found in hotels [pic] [pic] Two equivalent images of the chemical structure of sodium stearate‚ a typical soap. In chemistry‚ soap is a salt of a fatty acid.[1] Soaps are mainly used as surfactants for washing‚ bathing‚ and cleaning‚ but they are also used in textile spinning and are important components of lubricants
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95% ethanol Clear colorless liquid Acetyl chloride Clear colorless liquid with gas escaping from container FeCl3 Clear colorless liquid Commercial aspirin Fine powdery white solid crystals I2/KI Deep black liquid KMnO4 Brownish liquid Phosphoric acid Clear colorless liquid Table 2. Preparation of Aspirin. Description Salicylic acid + Acetyl chloride Cloudy white liquid with undissolved white powder Mixture at room temp White cloudy liquid Mixture in ice bath White particles
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is to compare the different densities of different liquids. Density is a comparison between an object’s mass and volume. Density = Mass divided by Volume. If the weight (or mass) of something increases but the volume stays the same‚ the density has to go up. If the mass decreases but the volume stays the same‚ the density has to go down. This experiment will show how the weight of certain liquids react to each other. Page 3 The seven liquids I have chosen for the experiment have different weights
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a way pf separating mixtures of solids‚ or solids and liquids with different sized particles - The mixture is poured through a sieve and the particles smaller than the sieve pass through while the larger particles are trapped by the sieve - The are commonly used for cooking - E.g. a mixture of rice and water is poured through a sieve to capture rice and remove the water Filtration - Is a technique commonly used for mixtures of solids and liquid‚ particularly when solids particles are quite small and
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According to the kinetic theory‚ both the particles in gases and the particles in liquids have kinetic energy. This energy allows the particles in gases and liquids to flow past one another‚ as shown in Figure 13.5. Substances that can flow are referred to as fluids. The ability of gases and liquids to flow allows them to conform to the shape of their containers. Figure 13.5 Both liquids and gases can flow. The liquid on the left is colored water. The gas on the right is bromine vapor. If a gas is
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to be the only liquid that seeped through another liquid.
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Campus we deal with the density of solids and density of liquids. The main purpose of this experiment is to understand what in reality density means‚ how we can measure it‚ how useful it is‚ what is the difference between density of solids and liquids‚ if the measurements that we did are been accurate and how we can calculate the percentage errors. materials 3 different metals A) copper B) iron C) aluminum - 3 Different liquids A) Water B) Olive oil C) Alcohol - Balance
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www.sciencenter.org/programs/d/oobleck background info and classroom activities.pdf NC Essential Standard & Objective: 2.P.2 Understand the properties of solids and liquids and the changes they undergo Clarifying Objective: 2.P.2.1 Give examples of matter that changes from a solid to a liquid and from a liquid to a solid by heating and cooling Specific Learning and Participation Objectives: Students will be able to analyze through experiments on the states of matter. Students can
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water occurs when the molecules in a liquid state absorb enough heat energy to vaporize into a gas. The heat energy‚ which causes the molecules to move‚ is called kinetic energy. The water molecules remain the same during this change‚ except that they’re moving much more quickly and their energy increases due to that movement. If you remove the energy by cooling the gas‚ then the gas condenses back into a liquid. Take away even more of the heat energy‚ and the liquid will solidify. This is what causes
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