pg 296 ) Day 1 Electrostatics - study of static electricity Neutral objects - materials that do not carry a charge Conductors allow charges (electrons) to flow through them easily. E.g. metal Therefore no matter how hard that you rub a metal tap no static charge will build up because the electrons that you are giving the tap just keep on moving up the tap and down the water line until they reach a ground. Insulators do not allow charges to flow through them. The charge builds up on
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Data Table: Qualitative Cation Tests Name Test Tube 1: HClNH3 Test Tube 2: NaOHExcess Aluminum 3+ No precipitate Slightly milky Dissolves Ammonium + No Precipitate No precipitate Calcium 2+ No Precipitate Milky white precipitate Precipitate does not dissolve Copper 2+ No precipitate Became much darker blue and milky Iron 3+ Brighter yellow Orange precipitate that then dissolves Lead 2+ Milky white precipitate Precipitate gets more milky Silver + Milky white precipitate Precipitate gets
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Exam-style Questions For Studies Exam 1. (a) Express f (x) = x2 – 6x + 14 in the form f (x) = (x – h)2 + k‚ where h and k are to be determined. (b) Hence‚ or otherwise‚ write down the coordinates of the vertex of the parabola with equation y – x2 – 6x + 14. (Total 4 marks) 2. The diagram shows the graph of the function y = ax2 + bx + c. Complete the table below to show whether each expression is positive‚ negative or zero. Expression|positive|negative|zero| a|||| c|||| b2 – 4ac|||| b||||
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IS113k Lab 1: Radio and Light Waves Virtual Lab 1) How is the radiating electric field (or electromagnetic signal) produced when radio stations broadcast? Include a description of what is producing the signal as well as the reasoning behind how this could produce a signal. We know that electromagnetic radiation is produced by accelerating charges. In the radio transmitter‚ electrons oscillate up and down and are thus accelerating. An electron will exert a force on another electron when they
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Lab Report Electrical Conductivity Introduction There are some substances that are capable of conducting electricity‚ and the reason they conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion
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The notion of the atom all stared about 450 BC when a Greek scholar starting think when can something break on more‚ when are the pieces at their smallest‚ this mans name was Leucippus. Leucippus also had pupil who also thought the same way as Leucippus‚ his name was Democritus. They developed there ideas and when Democritus died his theory summed up briefly was that everything in the world was made of tiny pieced that could not be broken up any more. That how the word atom was derived from the Greek
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segregation upon each other. Religion should be a positive action throughout all cultures‚ perceived as uniting‚ motivating and compassionate‚ yet it can’t be as religion is divided into two sides‚ the negative side overpowering the positive side‚ through discrimination‚ inequality and generalisation. Religion has mostly a negative influence towards our society due to the fact that something majorly negative needs to occur for something positive to happen. This is evident in the way in which African
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Graffiti has been an issue that generates concern to the modern society throughout the world and originating a controversy of it being classified as a legitimate art form or vandalism. For the purpose of discussing this issue‚ it is essential to understand the terms of graffiti‚ art and vandalism. Graffiti can be described as the act of marking by the use of spray-paints‚ markers or other tools on a surface‚ usually a visible spot‚ with the intention to attract attention from the general community
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Chemistry revision Atoms elements and compounds Atom-the smallest part of an element that can still be recognized as an element Element-a substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance Nucleus-middle of the atom‚ which contains protons and neutrons Electron-tiny particle‚ which surrounds the nucleus with a negative charge Compound-when two elements react and combine together which contain more than one element. There
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“Technological Development has a positive rather than a negative impact on society.” Discuss. Technological development refers to the process of research and development of technology. In discussing whether or not the development of technology has a positive impact on society a number of arguments‚ both or against‚ need to be examined. These arguments include bringing convenience to our daily life‚ the economic growth bought by the technology advancement‚ the problem of electronic waste and the
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