Crater Design Experiment Aim: To see how the height in which the ball is dropped from affects the depth of the crater. Hypothesis: I predict that as the height in which the ball is dropped from increases‚ so does the depth of the crater (the data will be directly proportional). The scientific knowledge which supports this is that the golf ball has a gravitational potential energy which increases as the ball is dropped from higher heights. When the height increases the ball gains more gravitational
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develop weaknesses that result in malfunctions or breakages. Corroded metal can also not conduct electricity‚ which again can interfere with the functions of that metal. Aim: the aim of this experiment is to evaluate the effect that sodium chloride has on the rate of corrosion of iron. 1. Experiment 1 2. Hypothesis: An increase in the level of sodium chloride in water will increase the rate of corrosion of an iron nail. 3. The independent variable is the amount of sodium chloride
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Sulfa Drugs: Preparation of Sulfanilamide Introduction The purpose of this experiment is to prepare sulfanilamide from p-Acetamidobenzenesulfonyl chloride. This will be done using reflux‚ vacuum filtration‚ and melting point determination. Experiment Scheme6 Figure 1. Reaction equation.6 A hot water bath was prepared in a fume hood using a 250-mL beaker. 2.5 g of p-acetamidobenzenesulfonyl chloride was placed into a 50 mL Erlenmeyer flask and 11 mL of dilute ammonium hydroxide solution
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Chemistry Lab Report Stoichiometry Design Experiment Percentage Yield of Calcium Carbonate and HCl I. Background Information When marble chips and hydrochloric acid are added together‚ they form sodium chloride‚ water‚ and carbon dioxide. This reaction can be displayed by the balanced equation below; CaCO3 (s) + HCl (l) NaCl(s) + H2O(l) + CO2 (g) As the carbon dioxide is formed‚ it will leave the open beaker as a gas. This will result in a loss of mass. The mass change can then be
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Experiment Number 1 ELECTROSTATICS SATRIA NICOLE C. GRANADOS BCH 1-4 GROUP NUMBER 4 SIR EDUARDO ABUGAO JR February 23‚ 2016 ABSTRACT Matters contain two types of charges such as positive and negative charges. Like matter‚ charges cannot also be created or destroyed‚ but rather transferred from one object to another. Rubbing materials together is the easiest way in order to charge them wherein one object will become negatively charged and the other one will become positively charged
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Introduction Rational drug design is a process essentially finding out how an infective agent works against a cell and using that information to design a drug that prevents the infective agent from being able to do what it does. Influenza viruses are continually changing into new strains. The proteins in their outer layer change continually. Our bodies learn to defend against one influenza virus‚ but the next time we are infected with an influenza virus it is different from the previous one and
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Francis a/l Xavier ID: 1302969 Group members: Yuan Li Hong‚ Desmond Wong Practical Lecturer: Mr Zoheir Practical Group: 6 Part 1 Title: To determine the coefficient of static friction between two surfaces. Objectives: 1. To determine the relationship between the mass of load and the length of spring. 2. To determine the coefficient of static friction between two surface. Apparatus and materials: 1. Retort stand 2. Spring 3. Slotted masses 200g with hanger
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Definitions of News: “News is any thing which interests a large part of the community and has never been brought to their attention.” – Charles A Dana‚ Editor of the New York Sun News is any new information or information on current events which is relayed by print‚ broadcast‚ Internet‚ or word of mouth to a third party or mass audience. The reporting and investigation of news falls within the profession of journalism. News is often reported by a variety of sources‚ such as newspapers‚ television
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I’m here to speak to you about the topic of ‘Whether or not television ruins children’. I’m sure we all know what a tv is and im pretty sure every household has at least one form of it. Ever since the television was invented‚ it has become one of our favourite pass-times. A lot of our daily routines are based around the tv. Mothers may iron clothes or cook while watching tv and sometimes many families eat in the living room and watch tv together. Although tv’s are considered as a positive and one
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question…does privacy actually exist online? In the case of Google‚ the company says it plans to only share user names and profile photos in conjunction with content users have chosen to help curate. For example‚ they may use the +1 you gave your favorite local bakery in an ad that the bakery runs through Google‚ or your rating of an album on your favorite band’s Google Play page may she shared with those in your Google Plus circles. Although users will be able to opt out and control whether their
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