In this lab‚ we extracted spinach pigments‚ and analyzed what colors of light these pigments absorb. By using TLC plate‚ hexane and acetone‚ I separated the pigments of spinach‚ and discovered that the main pigments were green and yellow. This works because with different polarities‚ pigments move at different rates. Hexane and acetone were also used to separate chlorophyll and carotene from spinach. Since they are polar‚ they can separate organic and inorganic things. From the experiment‚ I know
Premium Chromatography Light Chlorophyll
Instructions: Objectives: 1. To determine the boiling point of a liquid‚ and 2. To determine the melting point of a solid. Materials Used: Matches Isopropyl (Rubbing) Alcohol 1-2 small rubber bands Thermometer Powdered Acetamide<br< stand beaker 2 closed-end capillary tubes (melting point tubes) 10-12 mm diameter test tube Heat source Discussion and Review: In this experiment we will examine additional physical properties of liquids and solids. Two of the more important physical properties
Premium Liquid Temperature Water
rubbing alcohol and hand soap. A pipette was used to place consistent drops of liquid into a 10 ml graduated cylinder until it was filled to the 10 ml mark. The level was measured at the meniscus‚ bottom of the curve‚ of the liquid and the amount of drops was recorded. Dividing the volume (10 ml) by the amount of drops yields the volume of a single drop. This procedure was completed three times with three separate liquids; water‚ water with detergent and rubbing alcohol. Data from the three trials
Premium Volume Liquid Soap
They found competition in those categories‚ brands that were already positioned in the market and Dettol couldn’t compete. The only product that was successful in sales was the soap and liquid soap‚ probably because these products are strongly associated with germ killing. It achieved 44% of value share in liquid soap.
Premium Marketing Advertising Soap
of Various Liquids and Solids The purpose of this experiment is to determine the weight (density) of certain liquids and solids in chemistry. These liquids include; Water‚ Hexane‚ Carbon Tetrachloride‚ and solids include; Copper‚ Zinc‚ Lead and‚ Aluminum. It’s important to know the weight of these products so you can properly conduct experiments and make clear observations. Different techniques will be used to determine these densities and one in particular is mixing the liquids in different
Premium Liquid Temperature Accuracy and precision
Viscosity of sweetened water Avery Safley Introduction: Have you ever wondered why your honey comes out of the bottle so slow? The answer to this is viscosity. Viscosity is the resistance of a liquid to flow. Every liquid exhibits this resistance to some degree. Therefore the more resistance shown‚ the higher the viscosity. It can be thought of as fluid friction‚ just as solids show friction between other solids. This friction is caused by the molecules within the substance. Viscosity is
Premium Viscosity Liquid Water
Daphnia Experiment Report 1. Introduction Caffeine is found in many plant species‚ where it acts as a natural pesticide. It is found most commonly in cocoa‚ tea and coffee‚ but is also artificially added to some soft drinks such as cola to act as a flavour enhancer. When consumed by humans‚ caffeine works as a stimulant causing amounts of released neurotransmitters to be increased. High use of caffeine has been related with raised blood pressure‚ restlessness‚ insomnia and anxiety which‚ in
Premium Heart rate Caffeine Experiment
When you were a little kid‚ glue was a fun tool. It held your Popsicle houses together and it was fun to peel off your hands after it dried. But glue is not just child ’s play; glue is a type of liquid that used cohesive and adhesive forces. These two forces work together to create tools that you can use in housework‚ at work at the office‚ and arts and crafts. Adhesion is the attachment of one material to another‚ due to a variety of potential interfaces. Adhesives are sticky substances that are
Premium Liquid
solid to a liquid or liquid to gas‚ the energy‚ it requires energy to do so. The potential energy stored in the interatomic forces between molecules needs to be overcome by the kinetic energy the motion of the particles before the substance can change phase. The energy required to change the phase of a substance is known as a latent heat. The word latent means hidden. When the phase change is from solid to liquid we must use the latent heat of fusion‚ and when the phase change is from liquid to a gas
Premium Energy Temperature Liquid
between the two fluids. The fluid’s can be liquid or gas‚ and can be entered into the column either at the top or bottom. Figure 1 represents a typically layout used for fluidization. figure 1: Typical packed column set up used for fluidisation A packed column is constructed using a metal‚ glass‚ ceramic or plastic shell preferably with a corrosion resistant lining. The column should be mounted as vertical as possible to promote even liquid distribution. The packing material or bed
Premium Fluid dynamics Liquid