testing a natural indicators AIM: To prepare and testing a natural indicator and applying information about the color changes of indicators to classify and find trends of house hold substance as acidic‚ neutral or basic. Materials: * Distilled water * 250ml beaker X2 * Test tube X9 * Tripod * Wire Gauze * Bunsen burner * Safety goggles Test Object: * Hydrochloric acid (HCl) * Sodium hydroxide (NaOH) * White Vinegar * Lemon Juice * Baking
Premium Sodium hydroxide Chlorine Base
Red Cabbage Indicator Indicators are chemical compounds that can be added to a solution to determine whether it is acidicor alkaline. The indicator will change colour depending on whether an acid or an alkali is added. The colour in red cabbage (it is a pigment called an anthocyanin) makes a very good indicator. Acids and alkalis Acids have a sour taste‚ like vinegar (which contains ethanoic acid) and lemons (which contain citric acid). Alkalis are substances that react with acids and neutralise
Premium Base PH Acid
16-3 Red Cabbage Juice pH Indicator Sources: Prof. George Ewing’s C100 Demonstration Notes; Prof. Carolyn Huffman’s Fall ’93 C100 lecture; B. Z. Shakhashiri‚ 1989‚ Chemical Demonstrations: A Handbook for Teachers of Chemistry‚ vol. 3‚ pp 162-166. Description and Concept: Red cabbage juice will change to a variety of colors when added to solutions of various pH. Red cabbage juice is a pH indicator. Materials: red cabbage* blender hot or boiling water filter paper (coffee filters
Premium Chemistry PH indicator Water
Red Cabbage Indicator Experiment Aim: The aim of our investigation was to identify and understand how different chemicals (Acids‚ alkalis and neutral) react and experience a change in colour due of this. Introduction: The red cabbage indicator shows how a usual household product such as red cabbage can make a suitable indicator and be able find out if a chemical is either and acid‚ alkali or neutral. Acids are a chemical that reacts with an alkali neutralising it producing water
Premium Acid Sodium hydroxide Base
The Cabbage Indicator Experiment My hypothesis for this experiment is if I put an acid or a base in to a neutral then it will change colors. My hypothesis was correct in assuming that it would change colors with different substances or mixtures. If I put an acid or a base in to a neutral then it will change colors. The red cabbage indicator did change colors. Greens for bases and reds and pinks for acids. An alternative hypothesis for this could be “If the red cabbage indicator is purple then adding
Free Acid Base
HSC Chemistry First Hand Investigation 2009 Scientific Report Aim: To carry out a fist hand experiment in the extraction of red cabbage pigment‚ use this extracted pigment to standardize against know pH’s‚ test 5 household items to determine the possible pH of these items by using the standardization and assess the pigment’s ability to be used as a Universal Indicator. Risk Assessment: When dealing with fire‚ the Bunsen burner should always be switched to the safety flame before lighting. There
Premium PH indicator Laboratory glassware Rainbow
correlating to the volume of Pink Lady’s red apple juice to indicate enzymatic performance of pectinase to ensure reliability and allow scope for statistical evaluation. The trend is similar to the curve as seen in Figure 2 and it can be concluded that the trend is confirmed by the data collated. However‚ 5 trials are not sufficient enough to depict the rest of the results to accurately indicate the actual performance of pectinase in Pink Lady’s red apple juice extract. To be able to achieve reliable
Premium Nutrition Sugar Sucrose
1.0 Calibration of Volumetric Glassware 1.1 Introduction: Calibration is the process by which a stated measure such as the volume of a container is checked for accuracy. In general‚ measurements of mass can be determined more precisely and accurately than measurements of volume. Therefore‚ the mass of the liquid contained or dispensed by the glassware will be measured and the corresponding volume calculated using the density of the liquid. However‚ a relatively small change in temperature
Premium Density Laboratory glassware Volume
THE EFFECTS OF Brassica oleracea L. var. capitata L. EXTRACT ON THE SPERM QUALITY OF Mus musculus A Research Presented to the College of Arts and Sciences Our Lady of Fatima University In Partial Fulfillment of the Course Requirements for the Degree Bachelor of Science in Biology By MARLIZA A. ARIÑAS JAMEE LORRAINE M. DELA ROSA GILBERT H. DIPACULANG JR. March 2013 Chapter 1 THE PROBLEM AND ITS BACKGROUND This chapter gives an introduction and background on the study. This chapter
Premium Experiment Vermiform appendix Cabbage
Experiment 2 CALIBRATION OF A PIPETTE Introduction An ordinary laboratory pipette may be expected to deliver its nominal volume with good precision and good accuracy if it is used in the way recommended. In this experiment we investigate the precision and accuracy of such a pipette by making accurate determinations of the mass of water it delivers in repeated operations. Materials 10.0-cm3 pipette‚ 50-cm3 beaker‚ thermometer‚ pipette filler‚ graph paper. Procedure
Premium Density Statistics Accuracy and precision