Naphthalene Ball in Water Objective: In this experiment‚ we will determine if the naphthalene can be dissolve in water or not. And what will happen in the filter paper if we stick it in the funnel and let it absorbed the fumes in the boiling water with powdered naphthalene. Materials: Evaporating dish Spatula Watch Glass Filter paper Tripod Mortar and pestle Alcohol Lamp Funnel Beaker Data: Naphthalene 1. white crystalline compound 2. has a strong odor 3. round
Premium Water Nitric acid Ammonia
Properties of Chemical Reactions Ms. Whitty‚ Science 10 Fiona Adams‚ November 1st‚ 2012 Introduction Chemical reactions are a part of our daily lives‚ from rusting metal to making bread to leaves changing colour in the fall. A chemical reaction is the process that occurs when two or more substances combine to produce a chemical change. When a chemical reaction takes place‚ the change is indicated by one or more qualitative properties. The colour or odor could change‚ gas could be produced
Premium Chemical reaction Chemistry Sodium
= M2(11mL) M2 = 0.0018 M (For experiment 1‚ 2‚ 3) Experiment 1 Rate = ½ [0.0018M]/(117.76secs) = 7.7 x 10-6 M/s Experiment 2 Rate = ½ [0.0018M]/(60.88secs) = 1.5 x 10-5 M/s Experiment 3 Rate = ½ [0.0018M]/(59.95secs) = 1.5 x 10-5 M/s 3) Table of Experiments 1‚ 2‚ 3 Experiment | Initial [S2O82-] (M)Rxn Order = 1st | Initial [I-] (M)Rxn Order = 1st | Initial Rate (M/s) | 1 | 0.036 | 0.036 | 7.7 x 10-6 | 2 | 0.073 | 0.036 | 1.5 x 10-5 | 3 | 0.036 | 0.073 | 1.5 x 10-5 | Exp
Premium Chemical reaction Reaction rate
Silver is a very ductile and malleable metal used for thousands of years utensils‚ for trade‚ and as the basis for many monetary systems. Its value as a precious metal was long considered second only to gold. In Ancient Egypt and Medieval Europe‚ it was often more valuable than gold. Silver is currently about 1/50th the price of gold by mass‚ and 70 times more valuable than copper. Silver did once trade at 1/6th to 1/12th the price of gold‚ however‚ the discovery of great silver deposits in the
Premium Gold Cost Silver
The discovery of silver in Colonial America sparked a spanish global flow of silver as well as from the mines of Tokugawa‚ Japan. Although Spain was the primary distributer of silver‚ this global flow limited economic growth by creating an influx on silver. Peasants and people from lower classes were highly affected due to the fact that silver was required in an everyday basis but wasn’t provided for them. The Spanish‚ and the japanese served as providers of silver to the chinese economy. Throughout
Premium Ming Dynasty Economics China
2.23 Nitrate-Nitrogen and Nitrite-Nitrogen in Drinking Water Nitrate may be naturally occurring‚ although its presence in drinking water is more often associated with contamination by excessive use of fertilizers (both inorganic and organic)‚ in addition to inappropriate farming practices and sewage. The high nitrate level in drinking water is also associated with the simultaneous presence of bacterial contamination (World Health Organisation‚ 1996). The primary health hazard from drinking water
Premium Water Water pollution Pollution
Chemical Periodicity Engr. Imelda Galera De La Salle University-Dasmariñas Dasmariñas‚ Cavite Philippines ABSTRACT Chemical periodicity was demonstrated using different samples of elements from Group IA‚ IIA and IVA. These samples are: Li2CO3‚ Na2CO3‚ K2CO3‚ MgCO3‚ CaCO3‚ BaCO3‚ Carbon‚ Tin‚ Silicon and Lead. Each sample was placed in a test tube‚ (one sample and one test tube) and the physical color‚ appearance and state was defined. Water was used to test the solubility of the element
Free Periodic table Chemical element Chemistry
In this experiment‚ we have silver oxide and by using a bunsen burner‚ we will drive off all of the oxygen in the compound. We will do this by heating the silver oxide until the substance’s mass stays constant to know when all of the oxygen possible has been driven out. This process will occur through a series of heating and remassing. Silver oxide has many uses from batteries to military purposes. In a silver-zinc battery‚ silver oxide acts as the cathode and zinc as the anode. This battery is
Premium Oxygen Hydrogen Zinc
Title: Physical and chemical changes‚ and measurements in the metric system Name: Goh Kian Shen Lecturer: Dr. Anne Kee Hooi Ling Section: Chemistry 107A Date lab was performed: 17 January 2013 Aim: The aim of the experiment is to understand physical and chemical changes of different matters
Premium Measurement Temperature Test method
Prime cost. | B | Conversion cost. | C | Period cost. | D | Nonmanufacturing cost. | 2. | Prime cost and conversion cost share what common element of total cost? | A | Direct materials. | B | Direct labor. | C | Variable overhead. | D | Variable overhead. | 3. | On the Schedule of Cost of Goods Manufactured‚ the final Cost of Goods Manufactured figure represents: | A | the amount of cost charged to Work in Process during the period. | B | the amount of cost transferred
Premium Variable cost Costs Management accounting