Investigatory Project In Science & Technology IV (Potato Battery) Submitted by : Eloisa Umali Chelsea Jayne D. Diaz Pia Angela Valencia Acknowledgement The researchers would like to acknowledge with sincerest gratitude the following persons for the support they gave to them in the accomplishment of this investigatory project. Mrs. Rosie Castillo‚ who guide us and helped us in making this project. Who gave us the opportunity
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Effect of Temperature on Salt Diffusion Rates and it’s Relation to the Human Body Hypothesis: Ordinary table salt is known to dissolve easily in water. Dissolving or diffusion is the spreading of particles in another substance. This is seen when smoke from a chimney diffuses in the air around it‚ or when dropping coloring in water. When NaCl‚ sodium chloride‚ or otherwise known as ordinary table salt is combined with water the separate salt and water molecules will be attracted to each other
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Salt Pollution As awareness for pollution increases‚ other forms of pollution are defined. Almost everyone knows about toxic waste and carbon dioxide pollution‚ but not many people have heard of salt pollution. Salt pollution has been on the increase since the evolution of the automobile. With more pressure on government agencies to keep the highway clear and safe‚ an increase in the use of salt has developed. It is important to understand why salt is used and how it work as well as the environmental
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NOTES - SALT ANALYSIS S.No. | EXPERIMENT | OBSERVATION | INFERENCE | 1(a) | Noted the colour of the salt | BluePale greenGreenPale pinkColourless | May be Cu2+May be Fe2+May be Ni2+‚ Cu2+May be Mn2+Absence of Cu2+‚ Fe2+‚ Ni2+‚ Cu2+‚ Mn2+ | (b) | Noted the physical state of the salt | (i)Amorphous(ii)crystalline | May be CO32-May be Cl-‚ Br-‚ SO42-‚ NO3- | 2 | Action of heat:The given salt is heated in a dry test tube. | (i)Reddish brown vapours(ii)Crackling sound(iii)Yellow when salt and white
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Water Pollution and Its Effects on the Environment Water is probably the most important resource we as people have. Humans can survive without food for several weeks‚ but without water we would die in less than a week. On a slightly less dramatic note‚ millions of liters of water are needed every day worldwide for washing‚ irrigating crops‚ and cooling industrial processes‚ not to mention leisure industries such as swimming pools and water-sports centers. Despite our dependence on water‚ we use
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Being a couch potato is what many of us tend to be when we are on a break or on a holiday but why not try to do something different and useful that could bring benefits to one’s self? Earning additional cash over the internet could be let us just say one of the most beneficial way to kill time. Making extra cash is not easy but it is definitely worth the effort because the extra cash could come in handy during the rainy days. Besides‚ it’s easier earning some side income through the internet than
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separate salt‚ sand and iron filings from each other in a mixture‚ to figure out the percentage of each component in the original mixture? Background Research: In this Investigation‚ I will be separating sand‚ salt‚ iron fillings in a mixture and finding their percentages. Iron is a magnetic solid which is incapable of being dissolved in water. Salt is a non-magnetic solid which is capable of being dissolved in water. Sand is a non-magnetic solid which is incapable of being dissolved in water. I used
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Modeling Effective Dose: Salt Tasting lab Purpose The purpose of this lab is to see at what measurements (of salt) can the salt be detected by taste. Abstract The science of toxicology is based on the principle that there is a relationship between a toxic reaction (the response) and the amount of poison received (the dose). An important assumption in this relationship is that there is almost always a dose below which no response occurs or can be measured. A second assumption is that once a maximum
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friendship in this story was very strong for two young boys. Shmuel had taken beaten for eating food that he was offered by Bruno. Instead of complaining and telling Bruno how he felt he said nothing. From my prospective I believe that The Boy in the Strip Pajamas was a really interesting book. It gave me a glimpse
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of Saxony. 2008: First seizure of MDPV in the United States. 2009: MDPV became illegal in Denmark. 2010: MDPV made a controlled drug in the UK‚ Sweden‚ Germany‚ Australia and Finland. First reports of the widespread retail marketing of ’bath salts’ containing MDPV in the U.S. The US recognizes both Mephedrone (July‚ 2010) and MDPV (December‚ 2010) "a drug and chemical of concern". 2011: MDPV sale and possession are banned in Alabama‚ Arkansas‚ Delaware‚ Florida‚ Georgia‚ Hawaii‚ Idaho‚ Kansas
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