Lab # 4 Determination of Density of Liquids Name: Lab Partner: Period: 3 Date Completed: 9/23/2014 Date Submitted: 9/29/2014 Data TABLE 4 DENSITY OF SALT SOLUTIONS-INDIVIDUAL GROUP’S RESULTS Concentration (%) Mass (g) Volume (mL) Density (g/mL) 0 9.9522 10.00 0.9952 4 10.1291 10.00 1.013 8 10.5233 10.00 1.052 12 10.7487 10.00 1.075 16 11.0297 10.00 1.103 Unknown # 10.6234 10.00 1.062 Calculations 1. Show all density
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Activity; Making a lava lamp effect.Number of Children; 5/6 Setting; Primary School Year 3. Preparation Time; 15 minutes. Age of Children; 7-8 Years old. Activity Time; 30 minutes. Resources: | Rationale: | Clear plastic bottle. 3/4 cups of water. Vegetable oil. Food colouring. Alka –Seltzer tablets. | Get your clear plastic empty bottle‚ put 3-4 cups of cold water into the bottle‚ then add the vegetable oil till its nearly full up to the top‚ then add 10-15 drops of food colouring
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mixing materials can achieve dramatic permanent changes to the materials‚ dissolving lies somewhere between these two examples. Hesse (1992) states that the most universal example of dissolving involves a solid and a liquid‚ usually water. When a solid called a solute is mixed with a liquid called a solvent‚ the solute particles breakdown and spread them selves out to be closer to the solvent particles. This mixture is then called a solution. If the solute is coloured it will be easy to see a visible
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mayonnaise similar to manufactured mayonnaise. Introduction The purpose of this experiment is to determine the methods and techniques required to produce mayonnaise. Mayonnaise is an emulsion‚ which means that it is a stable combination of two liquids that are immiscible. They key to this concept is that the combination must be stable. Water and oil‚ for example‚ do not combine to form an emulsion because of hydrogen bonds that form between each other in water molecules. These bonds prevent oil
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faster and longer the particle is centrifuged‚ the smaller the particles are that will be separated. Separation occurs by causing the larger particles to separate to the bottom as a particle or pellet‚ and the smaller will remain suspended in the liquid‚ or supernatant. Due to smaller particles separating out first‚ centrifugation is often done in small steps so that the supernatant takes off all larger unwanted cells first. The basic process of centrifugation: 1) The tissue must be homogenized
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thermometer and placed in a Thiele tube filled with oil. The tube was heated by a Bunsen burner at approximately 1 °C per minute. Melting point temperatures were recorded at the first indication of fluid and then when the sample had turned completely liquid. Two trials were completed on each sample ². The melting point of 10% naphthalene / 90% Biphenyl mixture was determined by electronic instrumentation. Two samples were prepared and placed in closed end capillary tubes and then inserted into
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all the way throughout the body (thickness) of the tile. Because of this scratches are less noticeable in this type of tiles. They are formed with the paint mixture pre-added while making the body. * Nano polished Vitrified Tiles : a layer of liquid silica on vitrified tiles then which fills the micro (nano) pores on the tiles surface and makes it smoother in feel. * Glazed Vitrified Tiles(GVT) : vitrified tiles with glazed surface; it is called Glazed Vitrified Tiles (GVT). Main advantage
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Osmosis Aim: To determine the concentration of cell sap in a potato cell. Osmosis is the movement of water through a semi-permeable membrane. It starts from a weak solution and becomes a more stronger solution until the concentrations on both sides are equal. To investigate the range of solutions needed to find the point at which the surrounding solution is the same as the cell sap in the vacuole.
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parlor. They compete with one another as to effectiveness to the scalp and hair. Though the service is known as hot oil treatment‚ the material used id not oil but emulsion or cream. Tools and Materials for Hot Oil Treatment 1) Oil - is a greasy liquid used as lubricant. 2) Cape - is used to protect the patron’s cloth. 3) Comb - is used to seperate the hair and remove tangle. 4) Hairbrush - is used to loosen dandruff and remove dirt. 5) Bowl Enamel - is used for heating the oil. 6)
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the temperature of the warm water before the ice was add it and after the ice was added it. To take the temperature of the water we need to use a thermometer and make sure it’s in Celsius. To determine the mass‚ first I need to find the mass of the liquid (water) using a graduated cylinder and then find the mass again after the ice is added and then melted using the same material (graduated cylinder). Data & Observation Results | Trial 1 | Trial 2 | Trial 3 | Initial Volume of water (V1) | 100
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