From this lab we can learn to observe physical properties of varying substances as well as to use chemical reactions to observe chemical observe the chemical properties of varying substances. In experiment #1‚ we were able to detect physical properties of the aluminum and copper sulfate simply by looking at the substances. We then combined the two substances to see if they would create a chemical reaction and test the chemical properties. After being combined‚ bubbles and gas were created and the
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Introduction What is chemical change? Chemical change is the alteration of a substance into one or more different substances with different properties (also called chemical reaction). The four different types of chemial reations are synthesis‚ decomposition‚ single displacement‚ and double displacement. Synthesis is when atoms and/or molecules combine to form larger molecules. Decomposition is when a large molecules are split into elements or smaller molecules. Single Displacement has an element
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Experiment #17 Classification of Chemical Substances Prepared for: Dr. Robert O’Reilly By: Kudaibergenov Baizak 20.11.2013 Nazarbayev University Introduction While many thousands of substances are known‚ they can be classified into a few simple categories based on type of bonding that exists among the atoms in the substance. Bonds are chemical forces that hold atoms together to form molecules or compounds. These categories are ionic‚ molecular and metallic substances.
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Over 700 years ago the world was introduced to firearms which changed the world. Although the change was slow‚ there was a change. Today‚ over three-quarters of americans have had or have used a firearm in their life. That means that over 240 million people have used a weapon‚ but people see the weapon‚ but not how far they have come. It took 700 years to make one of the deadliest weapons in the world. Over 800 years ago the world was intrigued by the discovery of gunpowder. The mixture of saltpeter
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World War Two did not change the way Australians lived completely‚ but it caused significant changes in many aspects of life‚ such as women’s independence‚ Australia’s multiculturalism and Australia’s foreign affairs. Women were able to go out into the workforce‚ Australia’s population increased greatly with a lot of ethnically diverse families formed and relationships with countries such as the United States were created. During World War Two‚ husbands‚ fathers‚ sons and brothers were called upon
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hospitals were unclean and disorderly. The nurses were poor‚ unskilled‚ and had bad character. One woman saw these unhealthy conditions and sought to change them. Florence Nightingale was a nurse who changed the way hospitals work and saved a lot of lives. Her faith in God helped her overcome obstacles‚ including her parent’s disapproval. Florence Nightingale did a lot of things when she was alive. Like the stuff she changed‚ helping during the Crimean War‚ and a fundraiser (that was for her). She changed
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of the solar system. It wasn’t until the 1500’s that this theory was challenged. The time of scientific discovery was known as the scientific revolution. During this time‚ there were many improvements in science and experimentation. Old theories were being rejected by new laws that proved them wrong. As science improved‚ so did the world of philosophy. With science and philosophy discoveries‚ the arts began growing better then ever before. This period of time was known as the Enlightenment era. As
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Jim Hanas You Can Touch This is a very symbolic short story that depicts the meaning of judgment in society. This story presents a play center for children named You Can Touch This. Normally children are always told ‘Don’t touch this’ or ‘Don’t touch that’ or even “Once we get in the store please do not touch anything‚” but in this fun place‚ made only for kids‚ the children can be doctors‚ they can go shopping‚ they can do things they wouldn’t normally do in reality. After analyzing You Can Touch
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* Bibliography............................................................................................... Aim: The aim of the experiment that was carried out was to see‚ at what temperature and in which standard solution‚ does the amount of dye left in the boiling tube had the highest percentage transmission. Beetroot was used for the experiment because it was easier to see the dye after the practical was completed. Putting beetroot cylinders into different boiling tubes‚ which contained
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Batch Reactor Aim/Objective The aim of this experiment is to compare the theoretical conversion for a saponification reaction to the experimentally determined conversion in a batch reactor under constant temperature conditions. Experimental Procedure The first step was to ensure the electrical supply to the rig was turned off and that the Armfield batch reactor was empty and clean. 500mL of 0.1M sodium hydroxide solution was then added manually. The pump and stirrer were then set to
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