Observations of Chemical Changes Purpose/Hypothesis: To observe how acids react with bases and examine reactions of common household cleaners and the macroscopic changes these chemicals undergo. I expect for each solution to react differently when mixed with acids and bases. Procedure: I have a well-plate-96‚ a piece of white and black paper‚ and the chemicals from the Observation of Chemical Changes Experiment Bag. I used a different well for each combination of solutions. I placed two
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Acids and Bases Shane Purpose- To study the relationship between pH and metabolism. 10/21/13 Materials- see attached Per. D Biology Procedure- see attached Data and Results- see attached Theory- PH stands for the power of hydrogen. People refer to the pH scale as a tool for finding out if a substance is acidic‚ basic‚ or neutral. This scale goes from zero to fourteen. The number seven is neutral. Any number higher than seven on this scale is basic. Any number lower is acidic
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| 10/19/2011 | | | | How to Make Litmus Paper English Lesson: Procedure | | | | | | Dianne Anderson from class 7-3 | How to Make Litmus Paper English Lesson: Procedure Litmus paper is a paper that can indicate the level of acid or base of some substances. Litmus paper usually made from absorbing paper that contains red cabbage essence. Litmus paper is commonly used in school and university laboratory. Below are the steps how to make Litmus paper. Ingredients/Tools: * A
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The Effect of pH Level of a Liquid on the Rate of Corrosion of Copper wire In this experiment‚ I will be testing the corrosion rate of copper wire after leaving them in different liquids with different pH levels. By doing so I will be able to determine which pH level corrodes copper the fastest. I will conduct this experiment by pouring 250mL of different liquids with different pH levels in cups‚ followed by an iron strip placed into the cup. A stopwatch will be timing how long it takes the iron
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Investigation of pH titration curves (Topic 8) Criteria Assessed: DCP‚ CE Time allowed: 1.5h Name: ________________________ Internal Assessment Criteria Aspect 1 Aspect 2 Aspect 3 Total DCP CE Aim: The aim of this practical is to plot and investigate the pH titration curves for the titration of a strong acid with a strong base and of a weak acid with a strong base‚ and find Ka of the weak acid. Procedure: Part I 1. Pour 30 ml of the HCl solution of unknown concentration in a 100 ml beaker
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Mixing of two solutions. 55 Class IX EXPERIMENT No: 9 AIM: To study the external features of root‚ stem‚ leaf and flower of monocot and dicot plants. Material Required : Plants of Hibiscus/Peturnia/rose/pea and grass/maize/bamboo/lily or‚ any other ornamental herb with flower and fruits‚ simple or dissecting microscope‚ hand lens‚ slide‚ coverslip and razor /blade. Procedure : 1. 2. 3. Observe the differences in the external features of stem‚ leaf‚ root‚ flowers and seeds. To study the leaf‚ see
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Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Remains clear. |Remains clear. | |HCl + Blue Dye |B6 |Orange color. |Cannot distinguish color
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Titration Pre-Lab Alan Hussein 1. Purpose: This lab is trying to help us better understand Titration and how it can neutralize bases using acids‚ and how we can use it to help us when performing and using Titration in labs. 2. Safety: Goggles 3. Prelab Questions: 1. What color is bromothymol blue (BTB) in an acid? Once it is dropped in the BTB will turn into a yellowish color. 2. . What color is BTB in a base? It turns into a bluish color if dropped in. Goes from yellow-green-blue 3. What
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1.2.4.4 Sub-criteria standardization The standardization process consisted in conversing cell values of the sub-criteria layers into a common [0-1] scale. The minimum 0 corresponds to the less desirable condition with regards to aquifer recharge with reclaimed water and 1 the most desirable condition. The cell values of all continuous numerical sub-criteria (e.g. slope‚ soil salinity and unsaturated zone depth) were rescaled using fuzzy linear membership functions. For categorical layers (e.g. soil
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Evaluation of gel A. pH: The pH of the various gel formulations was determined by using digital pH meter. B. Appearance: -The prepared gel bases were inspected visually for clarity‚ colour and presence of any particles. C. Homogeneity: All developed gels were tested for homogeneity by visual inspection after the gels have been set in the container. They were tested for their appearance and presence of any aggregates. D. Skin irritation test: Test for irritation was performed on human volunteers.
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