Celsius) as water changed from solid to liquid to gas over a hot plate. This lab report will discuss quantitative and qualitative data contained in the lab‚ how energy is related to phase change in water and an elucidation of how melting point and boiling point relate to the physical properties of matter. This paper will basically outline the lab done in class and a way for the teacher to see what was learned from this lab. A real-life situation to this phase change of water is the glaciers that
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only helps it taste better. Literature Review Table salt is often added to water before the boiling process in hopes that the water will boil faster. It has been argued that the boiling temperature difference is insignificant with a small pot of water. However‚ when adding salt to
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Alkenes from Alcohols: Analysis of a Mixture by Gas Chromatography Aim: To analyze a mixture of alkenes by gas chromatography. Introduction: In this lab‚ we specifically used elimination reaction; however we only used the E1 reaction. In the presence of strong acids‚ alcohols protonate to form a good leaving group‚ namely water. Upon loss of a proton to a good leaving group‚ an introduction of unsaturation (a double bond) can be preformed. According to Wikipedia‚ an E2 reaction is typically
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3.2 and 3.4 was to determine whether the melting/freezing or boiling point is a characteristic of the property of the substance. A characteristic property is a certain property (physical or chemical) that can determine or identify the substance. For example‚ density and magnetism are two characteristic properties that can distinguish objects from one another. In this case‚ we are figuring out whether the melting/freezing or boiling point of a substance will help us find out what the substance is.
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solution the lower the boiling point. The more solute in a solution‚ the higher the boiling point. A colligative property of a solution or solvent varies depending on the amount of solute particles in it‚ though it doesn’t matter the kind of solute. The more solute the more colligative property of the solvent. Also‚ its boiling point changes. The more solute‚ the higher the boiling point. Less solute causes a lower boiling point. Antifreeze lowers the freezing point of an H2o based solution
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and a solvent based on colligative properties‚ which means solution’s properties will differ depend on the proportion of solute present. Solutions have both a lower freezing point and a higher boiling point than pure solvent. The more solute is present the bigger the difference between the freezing point and the boiling point. To explain furthermore‚ we need to understand that temperature is the measure of the particle’s average
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heat will be 1 and we just have to measure the water to find the mass and take the temperature before and after we start to find the energy change. Background: The science behind this experiment is that we know that water has a melting point at 0C and a boiling point at 100C. The first part of the graph is the ice changing temperatures from -.2C to 0C. That part of the graph is modeled by MCΔT. The second part of the graph is the ice changing to water. This part of the graph is modeled by MKFusion
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Compound | Structure | Formula | Boiling point ( in degrees) | Heptane | | C7H16 | 98.4 | 1-Hexanol | | C6H14O | 157 | The boiling point reflects the strength of forces between molecules. The more tightly bonded the molecules are‚ the more energy is required to convert them into gases. These forces are called intermolecular forces. There are 3 types‚ dispersion forces‚ dipole-dipole and hydrogen bonding. The influence of these attractive forces will depend on the functional groups present
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of the 1-butanol from condensing into the vial during fraction A because it would condense onto the sponge and drip back down into the flask. The boiling point of 1-butanol is higher than the boiling point of ethanol‚ so the cooler surface of the sponge helped condense 1-butanol‚ but the ethanol still made it to the vial because of its lower boiling point. The sponge helped improve efficiency of the distillation. We will use distillation plot and gas chromatography to test it. To draw the distillation
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water. Do you like salt? Do you put it on your food to make it taste better? Salt doesn’t just make food taste better; it can change the freezing and boiling point of water. I bet you didn’t know that! There’s a reason for that‚ but I’ll explain that a little later. First‚ let’s find out if salt can actually change the freezing and boiling point of water. To do so‚ we need to do an experiment. Now‚ if you’re going to do an experiment‚ you’re going to need a hypothesis. Let’s use mine. I said “if
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