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Free research essays on topics related to: beaker

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  • Orange Juice Graduated Cylinder
    456 words
    Supplementing Vitamin C: Essential To Good Health Millions of Americans depend on vitamins. Vitamins are what gives you a boost and helps you start your morning right. In this report I will discuss different kinds of vitamins, where vitamins come from, how vitamins help you, oranges, and my lab results. Ascorbic acid, also called vitamin C is an organic compound needed by humans to prevent scurvy and to increase the body's resistance to infections (Encarta 1). Ascorbic acid acts as an antioxidan...
    Free research essays on topics related to: orange juice, minute maid, vitamin, graduated cylinder, vitamin c
  • Specific Heat Boiling Point
    1,047 words
    The purpose of this lab was to determine the specific heat of two different metals. In order to do this, specific directions were executed in order to discover the specific heat. First, we needed to obtain and record the weight of the Styrofoam calorimeter cup. Next, we filled the cup 2 / 3 full with cool tap water and recorded the temperature of the water. After this was done, we filled a glass beaker half full with water and placed it on a hot plate in order to have the water reach boiling poi...
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  • Test Tube Cm 3
    802 words
    INFORMATION FOR PROBLEMS 1 - 5: 25 g KNO 3 and 25 g NaCl were place into 7. 2 gcm 3 of water, heated to 70 degrees and filtered. All necessary. 1. How much KNO 3 should be found in the filtrate? 2. Approximately how much NaCl should be found in the filtrate? 3. When filtered at 70 degrees, how much NaCl should be found on the filter 4. When the filtrate is cooled to 20 degrees, how much of the KNO 3 can be expected to crystallize (precipitate)? 5. About how much NaCl will precipitate in the filt...
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  • Permeable Membrane Cell Membrane
    661 words
    Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. Diffusion results because of the random movement of particles. The diffusion of water into and out of a selectively permeable membrane is called osmosis. Because of the selectively permeable membrane, nothing but water and other very small particles can be diffused through osmosis. The cell membrane is similar to the membrane mentioned above, so the cell would lose water because of osmo...
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  • Sodium Hydroxide Bunsen Burner
    1,009 words
    Experiments to Provide Evidence in a Prosecution Case with the Pervis Vinegar Company on Unknown Toxins The aim of this experiment is to preform tests on two samples of vinegar, one that is commercially safe and the other not (from the Pervis Company) to determine the unknown toxin contained in the Pervis Vinegar. Materials: Numerous Beakers/Conical Flasks Phenolphthalein Indicator Burette Numerous Test Tubes Sticky Tape Test Tube Rack Sodium Hydroxide (NaOH) Calculator Sample of Commercially Sa...
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  • Determining Ph Of Identical Strong And Weak Solutions
    844 words
    Experiment: Determining pH of identical strong and weak solutions Date: 31 / 10 / 03 Aim: Plan and perform a first-hand investigation to measure the pH of identical concentrations of strong and weak acids. Equipment: Deionised water (H 2 O) Tartaric Acid (C 4 H 6 O 6) Citric Acid (C 6 H 8 O 7) Sulfuric Acid (H 2 SO 4) Acetic Acid (CH 3 COOH) Hydrochloric Acid (HCl) Ammonium Chloride (NH 4 Cl) Tap Water (H 2 O) Nitric Acid (HNO 3) Probe Ferric chloride (Fe Cl 3) Wash bottle Sodium Chloride in tap...
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  • Stonehenge Was Built Midsummer Solstice Druids
    683 words
    There are probably hundreds of myths and legends about Stonehenge. Various people have attributed the building of this great megalith to the Danes, Romans, Saxons, Greeks, Atlanteans, Egyptians, Phoenicians Celts, King Aurelius Ambrosio us, Merlin, and even Aliens. One of the most popular beliefs was that Stonehenge was built by the Druids. These high priests of the Celts, constructed it for sacrificial ceremonies. It was John Aubrey, who first linked Stonehenge to the Druids. Additionally, Dr. ...
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  • Wanted To Find Object Permanence
    323 words
    Acquiring object permanence: AIM: Piaget wanted to find out at what age children acquire object permanence. METHOD: o Piaget hid a toy under a blanket whilst the child was watching, and observed whether or not the child searched for the hidden toy. o Searching for the hidden toy was evidence of object permanence. o Piaget assumed that that the child could only search for a hidden toy if they had a mental representation of it. RESULTS: o Piaget found that infants started searching for the toy at ...
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  • Test Tube Aluminum Foil
    2,055 words
    Osmosis Lab Purpose The purpose of this lab is to determine the concentration of solutes inside of a potato s cell. We also want to know the composition of potato water and stuff. Also the scientific Phenomenon studied of diffusion/ Osmosis. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis is process by which water molecules diffuse across a cell membrane from an area of higher concentration to an area of lower concentration. ...
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  • Bunsen Burner Degrees Celsius
    1,031 words
    Aim: Dunder Experiments Experiment 1. Aim: To find the PH of Dunder. Materials: -Crucible -Filtrated Dunder -Universal Indicator -Eyedropper Method: A small amount of filtrated Dunder is placed in the Crucible. A few drops of Universal Indicator are then dropped onto the Dunder with the Eyedropper. The mixture will then change to colour corresponding to the Dunder's PH. Results: In this Experiment the PH of the Dunder came up as 4. This showed that Dunder is considerably acidic. Experiment 2. Ai...
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  • Hydrogen Peroxide Hydrochloric Acid
    326 words
    Factors affecting reaction rates: Work to be done: Find out what factors that effect a reaction by experiment. Chemicals and apparatus: Spoon Test-tubes Water Beakers Glowing splint Citric acid, Magnesium powder, Mg Hydrochloric acid, HCl Zinc, solid and powder Acetic acid, HAc Diluted hydrogen peroxide MnO 2 Lab: Lab 1: First I mixed equal volumes of citric acid and magnesium powder. At first there was no reaction. I then added some water, and there was a reaction. Lab 2: I poured the same amou...
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  • Factors Affecting 10 Cm
    1,336 words
    'Planning Osmosis is the net movement of water molecules from a region of their higher concentration through a partially permeable membrane. This movement usually takes place through a membrane which is permeable to water but not to solutes. In my investigation I am going to be investigate the factors affecting the rate of Osmosis. Some factors affecting this are: Length? of membrane Temperature? of water Concentration? of solution The factor I am going to investigate is the length. Equipment Vi...
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  • Potassium Hydroxide Carbon Dioxide
    1,400 words
    Finding out about photosynthesis Date: Partners: Aim: To be able to explain the conditions necessary for photosynthesis and to compare experimental results to a control. To recognise tests for some inorganic substances found in plants. Materials: h A plant with variegated leaves in a pot which has been in the dark for 24 hours prior to the class h Iodine h Alcohol h Potassium hydroxide h Hotplate (or Bunsen burner with tripod) h Petri dish h Funnel h 2 flasks (500 ml) h 2 beakers h Aluminium foi...
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  • Optimum Temperature Test Tube
    810 words
    Aim: In this investigation I am trying to find out how the temperature of water affects the reaction rate between amylase and starch. The thing that I am going change are the temperature of water, which are 10. C, 20. C, 30. C, 40. C, 50. C. The things I will measure are the colour of the mixture in the present of iodine each minute until it stays a constant brown. I researched this information in a previous lesson in which we did the experiment at one temperature and timing the amount of amylas...
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  • Bunsen Burner Hydrochloric Acid
    762 words
    The Problem: I am going to find out how temperature can affect the rate of reaction. Background information: Factors that change the rates of reactions are: ? Temperature? an increase in temperature will make the reaction occur faster. This happens because the particles of that substance move faster when it is heated. Because the particles move faster, they would collide more, making the reaction rate faster. ? Concentration? the increase in concentration, the greater and faster the reaction. Th...
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  • Factors That Affect Light Energy
    2,125 words
    Investigation Into The Factors That Affect The Investigation Into The Factors That Affect The Rate Of Photosynthesis In Elodea Investigation into the factors that affect the rate of photosynthesis in Elodea Introduction? ? Photosynthesis is the chemical process, which takes place in every green plant to produce food in the form of glucose. ? Plants use the suns energy to join together water and carbon molecules to make the glucose, which is sent around the plant to provide food. ? Cells in the r...
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  • Rate Of Reaction Amount Of Water
    1,531 words
    Photosynthesis is a very important process in nature. It is the production of energy in the form of glucose involving water from the soil, carbon dioxide from the air and light energy. It takes place in all green plants, which use the green chlorophyll, held in chloroplasts in the leaves, to trap light. The main site of photosynthesis is the palisade mesophyll cells in the leaf of a plant. It is these cells that contain the green chloroplasts and are very well adapted to their task. They are nea...
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  • Calcium Carbonate Hydrochloric Acid
    999 words
    Reaction Rate Between Calcium Carbonate And Hydrochloric Reaction Rate Between Calcium Carbonate And Hydrochloric Acid Calcium carbonate and hydrochloric acid react together. Plan an investigation to examine the factors that effect the reaction rate between them. I am trying to find out what affects the reaction rate of calcium carbonate and hydrochloric acid. Things that affect the reaction rate are the temperatures of the hydrochloric acid, the amount of hydrochloric acid, the concentration of...
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  • Check The Exact Temperature Piece Of Glass Flask
    415 words
    CHARLES? Gas Laws GAS LAWS CHARLES? LAW Purpose: To show that the volume of the gas or mixture of gases such as air, changes when the gas is heated or cooled. Materials: Thermometer, (1) 600 ml beaker, (1) battery jar, and (1) 125 Erlenmeyer Flask, (1) stopper with a 2 in. piece of glass, glove, ring stand Procedure: Set up an Erlenmeyer Flask with a stopper and 2 -inch piece of glass tubing inserted in the stopper. Boil approximately 400 mL of water by allowing a clamp to press on the top of th...
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  • Liquid Nitrogen Liquid Hydrogen
    1,519 words
    Cryogenics and the Untitled Cryogenics and the Future Cryogenics is a study that is of great importance to the human race and has been a major project for engineers for the last 100 years. Cryogenics, which is derived from the Greek word keys meaning " Icy Cold, " is the study of matter at low temperatures. However low is not even the right word for the temperatures involved in cryogenics, seeing as the highest temperature dealt with in cryogenics is 100 (C (- 148 (F) and the lowest te...
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