mass remains constant in a confined space of any physical or chemical changes that may take place. Where does it fit? : • Grade 5 Curriculum – Understanding Matter and Energy (properties of and Changes in Matter) • Fundamental Concepts –Energy • Big Ideas – Matter that changes state is still the same matter. Summary: • The law of conservation of mass states that the total amount of mass remains constant in a confined space of any physical or chemical changes that may take place. Students will explore
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Chemical Weapons Chemical weapons use the toxic properties of chemical substances rather than their explosive properties to produce physical or physiological effects on an enemy. Although instances of what might be styled as chemical weapons date to antiquity‚ much of the lore of chemical weapons as viewed today has its origins in World War I. During that conflict "gas" (actually an aerosol or vapor) was used effectively on numerous occasions by both sides to alter the outcome of battles. A significant
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Penn Foster College Scottsdale‚ Arizona September 2012-Present ONLINE COURSES Early Childhood Education-Childhood Development Associate (CDA) Samland Institute of Allied Health and Technology Chicago‚ Illinois Sept.09-November 09 Physical Rehabilitation Aide (PRA) Certified Nursing Assistant Certification (CNA) Harold Washington College Chicago‚ IL. Spring 2009 English
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JOUR SUPPLEMENTARY ESSAY Feature Characteristics The term “feature article” is quite general and can include many different forms‚ such as profile features‚ news features‚ expose’s‚ and many others. Feature journalism can also have numerous purposes‚ for example to inform‚ to educate‚ or to simply entertain. While ‘feature article’ is certainly a broad term‚ features do come with their own set of defining characteristics which make them different to a news article. Feature articles are distinguished
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If you could live anywhere in the world‚ where would you live‚ and why? This is a big planet with differences from one block to the next. But if you could live anyplace‚ any country‚ where would it be? Maybe you want to live in your home country? Maybe you wouldn’t leave where you are right now. As for me‚ I would like to experience Brazil‚ maybe Argentina. The culture‚ the architecture‚ good food‚ and let us not forget the history! Did I mention the language? Oh how I love Portuguese language
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be acidic and solutions with a pH greater than 7 are basic or alkaline. Pure water has a pH very close to 7. pH is defined as the decimal logarithm of the reciprocal of the hydrogen ion activity‚ aH+‚ in a solution. Universal indicator consists of a mixture of indicators such that there is a continuous color change from about pH 2 to pH 10. Universal indicator paper is made from absorbent paper that has been impregnated with universal indicator. Indicator Low pH color Transition pH range
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Homeless: What Has Been Done To Decrease The Problem? One of the largest growing concerns in Toronto is the constantly increasing number of citizens who are finding themselves living on the streets. With the decrease in the number of available jobs‚ the population of homeless people has literally boomed. My questions are not as simple to answer as they may appear. Why is a large portion of our community forced to live on the streets? What has be done to decrease the problem? These are the questions
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A Critical Analysis of the Effects of Chemical Castration and Physical Castration on the Recidivism Rates of Sex Offenders Introduction This paper examines the effects of chemical castration and physical castration on the recidivism rates of sex offenders. Using theory integration or the multifactor approach‚ the findings reveal there are several factors influencing sex offender recidivism. Both chemical castration and physical castration have the potential to reduce the recidivism
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Chemical Periodicity ------------------------------------------------- ABSTRACT The experiment chemical periodicity shows the properties and reactions belonging to group IA‚ IIA‚ and IVA. Proper procedures and observations were done to determine the solubility‚ physical state‚ color‚ and appearance of the compounds namely Li2CO3‚ Na2CO3‚ K2CO3‚ CaCO3‚ and BaCO3. The results shows that Li2CO3‚ Na2CO3‚ K2CO3 were soluble in water‚ while MgCO3‚ CaCO3‚and BaCO3 were not soluble. All of these compounds
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a. Description of fracking Fracking is often also called hydro fracking‚ hydraulic fracturing‚ shale oil or shale gas. This technology can be defined as the process of extraction of oil and gas by providing a of sand‚ water‚ and chemicals injected at high pressures vertically and horizontally to the bottom layer of rock in which oil and gas are trapped. Hillard Huntington et al.2013 Fracking was developed to get the remnants of oil contained in production wells‚ especially in old oil wells. This
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