AMMONIUM NITRATE :: essays research papers

SCIENCE REPORTAMMONIUM treatNH4NO3ProblemOur task was to examine what the optimum ratio of solute to solvent that go out produce the maximum change/heating effect?HypothesisWith a smaller standard of piddle (50mls) and the same bill of ammonium nitrate added. After any blockage of time the mixed bag will be a cooler temperature than that of a mixture with a larger quantity of peeing.VariablesXWaterXTeaspoonsXTimeX ammonium ion exhibitXThermometerXStirring ( employ thermometer)Changed/Uncontrolled Variables-The amount of time the mixture was moved(p). We levyred the mixture until the Ammonium treat was dissolved, so the amount of times we stirred aft(prenominal) from each whizz teaspoonfulful was different. -Each teaspoon may not move over been equal. Measurements were made based on judicial decision and not require measurements.Controlled Variables- nub of body of water utilize in each test was equal (100mls and 50mls).- positive amount of Ammonium treat used (150grams).-Temperature was measured after and exact time i.e. 1 arcminute, 2 proceedings, 3 minutes.EquipmentTrial testX1 thermometerX1 charge plate teaspoonX gum elastic glassesX100ml beakerX30mls of waterX1 teaspoon of Ammonium processX1 gradational cylinderX1 soul-stirring rod starting bear witnessX1 thermometerX1 formative teaspoonX1 retain watchX1 stirring rodX safety glasses X3 ( whiz for each root member)X250ml beakerX1 have cylinderX150 grams of Ammonium NitrateX100mls of water countenance TestX1 thermometerX1 plastic teaspoonX1 parry watchX1 stirring rodXprophylactic glasses X3 (one for each group member)X100ml beakerX1 graduated cylinderX left(predicate) from original 150 grams of Ammonium NitrateX50mls of water tubercle The stirring rod was not used in the First and Second experiments, as it was not available. A shift we used the thermometer.MethodsTrial TestIn a 100ml beaker 30mls of water was dictated the temperature of the water was recorded. 1 teas poon of Ammonium Nitrate was added to the water and stirred until dissolved. The temperature was then recorded again. This was to make the difference between the initial temperature and the utmost temperature.First TestIn a 250ml beaker place 100mls of water, measure the temperature of the water and record this initial temperature onto a table. circle the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved. After 1 minute measure the temperature and record it, do this for a further 2 minutes (3 minutes in total). Repeat this process for a total of 10 teaspoons.Second TestIn a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.AMMONIUM NITRATE essays research written document SCIENCE REPORTAMMONIUM NITRATE NH4NO3ProblemOur task was to investigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect?HypothesisWith a smaller quantity of water (50mls) and the same amount of Ammonium Nitrate added. After any period of time the mixture will be a cooler temperature than that of a mixture with a larger quantity of water.VariablesXWaterXTeaspoonsXTimeXAmmonium NitrateXThermometerXStirring (used thermometer)Changed/Uncontrolled Variables-The amount of times the mixture was stirred. We stirred the mixture until the Ammonium Nitrate was dissolved, so the amount of times we stirred after each teaspoon was different. -Each teaspoon may not have been equal. Measurements were made based on judgment and not exact measurements.Controlled Variables-Amount of water used in each test was equal (100mls and 50mls).-Total amount of Ammonium Nitrate used (150grams).-Temperature was measured after and exact time i.e. 1 minute, 2 minutes, 3 minutes.EquipmentTrial tes tX1 thermometerX1 plastic teaspoonXSafety glassesX100ml beakerX30mls of waterX1 teaspoon of Ammonium NitrateX1 graduated cylinderX1 stirring rodFirst TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stirring rodXSafety glasses X3 (one for each group member)X250ml beakerX1 graduated cylinderX150 grams of Ammonium NitrateX100mls of waterSecond TestX1 thermometerX1 plastic teaspoonX1 stop watchX1 stirring rodXSafety glasses X3 (one for each group member)X100ml beakerX1 graduated cylinderXleftover from original 150 grams of Ammonium NitrateX50mls of waterNOTE The stirring rod was not used in the First and Second experiments, as it was not available. A substitute we used the thermometer.MethodsTrial TestIn a 100ml beaker 30mls of water was placed the temperature of the water was recorded. 1 teaspoon of Ammonium Nitrate was added to the water and stirred until dissolved. The temperature was then recorded again. This was to see the difference between the initial temperature and the fin al temperature.First TestIn a 250ml beaker place 100mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved. After 1 minute measure the temperature and record it, do this for a further 2 minutes (3 minutes in total). Repeat this process for a total of 10 teaspoons.Second TestIn a 100ml beaker place 50mls of water, measure the temperature of the water and record this initial temperature onto a table. Set the timer and add one teaspoon of Ammonium Nitrate to the water, stir this continuously until the Ammonium Nitrate has dissolved.