Synthesis Decomposition And Displacement Reaction Lab Report

At the particle level, NaHCO3 is composed of sodium ions, bicarbonate ions (HCO3-), and water molecules (H2O). When heat is applied to NaHCO3, the thermal energy breaks the bonds between the bicarbonate ion and the hydrogen ion. This causes the formation of carbonic acid (H2CO3). The resulting Na2CO3 is formed from the remaining sodium ion and the carbonate ion (CO3^2-), which is produced from the decomposition of the bicarbonate

According to the observations recorded, the metal ion Cesium is present in the “unknown samples”. Unknown sample number five produced a violet color when placed in the flame. Unknown sample number four produced an orange color when placed in the flame. Unknown sample number one produced a violet color when placed in the flame. This evidence supports the claim that the metal ion Cesium is present in the unknown samples according to table two, the Flame Spectra of the Alkali and Alkaline-Earth Elements.

To test for the presence of the carbonate (CO32-) anion, a small scoop of the unknown compound was mixed with

●5H2O? b. What is a possible chemical equation for the decomposition reaction? 10.

This experiment was composed of five reactions: The formation of Cu(NO3)2, the formation of Cu(OH)2, the formation of CuO, the formation of CuSO4, and the formation of Cu(S). For Reaction 1 which was the formation of Cu(NO3)2, the mass of the copper wire was taken in an analytical balance so that it can be compared to the final mass of copper at the end of the experiment. The copper wire was bent slightly and was laid flat in a 250 mL beaker so that the 16 M HNO3 solution could cover the whole wire. In the fume hood, a disposable pipette was used to distribute about 4 mL of 16 M HNO3 into the beaker with the copper wire.

Exercise 1 1. Suppose a household product label says it contains sodium hydrogen carbonate (sodium bicarbonate). Using your results from Data Table 1 as a guide, how would you test this material for the presence of sodium bicarbonate? B BoldI ItalicsU Underline Bulleted list Numbered list Superscript Subscript33 Words

1. Magnesium is an alkaline earth metal with an atomic number of 12 and an atomic mass of 24.305. It is part of the second group of elements on the periodic table located on the far left side of the periodic table. *CAUTION* Magnesium is a flammable metal!

Observe and describe the effect of different wavelengths on speed of electrons emitted. 2. Observe and describe the effect of different levels of intensity on number of electrons emitted. 3. Select different elements of sodium, zinc, copper, platinum, and calcium.

This element is a transition metal in group 12. Zinc is a family of cadmium (Cd), mercury (Hg), and copernicium (Cn), even though they are found in same row and they have things in common they also have different properties. Zinc’s mass is 65. some of the colors are bluish-silver, white, and bluish-green Zinc has many use. Zinc is used for metal coating rust protection, nickel , steel iron and many other things.

The alkali metals are softer than most other metals. Cesium and francium are the most reactive elements in this group. Alkali metals can explode if they are exposed to

Chemical compounds that are available to determine are CaCO3, CaCl2, Ca(NO3)2, mgCl2, MgSO4, KCl, HCl, HC2H3O2, KNO3, K2SO4, NaC2H3O2, Na2CO3, NaCl, Na2SO4, HNO3, H2SO4, HNO3, H2SO4, NH4Cl, (NH4)2SO4, K2CO3, 0.1 M AgNO3, 0.2 M BaCl, Mg(s), NaOH, and KOH. To start this experiment, start with the flame test by gathering a Bunsen burner and a Nichrome wire. Connect the Bunsen burner with a rubber tube to a laboratory gas. To prepare solutions for the flame test, weigh out 0.205 gram of Unknown Compound using an analytical balance and mixed it into a 140 mL beaker filled with 20 mL ionized water. Ensure that solid is completely dissolved using a stirring rod.

Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of

CRC handbook of chemistry and physics. Vol. 85. CRC press, 2004,p4-18 Zinc Zinc, an element with an atomic weight of 65, is classified as a Group IIB post-transition member of the periodic table. The Group IIB metals below zinc in the periodic table are cadmium and mercury ,Zinc is generally considered a relatively nontoxic metal .

Research Question: How does the concentration of the nitric acid affect the the time for the magnesium to dissolve or react. Hypothesis: If the concentration of the nitric acid is lower, the magnesium strips will dissolve slower and each time the concentration acid is higher the magnesium strip will dissolve faster. The reason for magnesium strips to dissolve faster when the concentration of the nitric acid is higher is because the reaction of this experiment is exothermic and when more energy is given out the faster the magnesium strips will dissolve. Collision theory is when different reactions collide at different rates, a slow reaction have a low rate of reaction and a fast reaction have a high rate of reaction.

When hydrochloric acid and magnesium ribbon were mixed, it was a chemical change because gas was produced as shown in the bubbles, and there was also heat. When sodium hydroxide and copper sulfate solution were mixed, it was a chemical change because there was a jelly-like substance formed in the middle, which was a precipitate. When sodium chloride and water were mixed, it was a physical change because there was no heat, light or gas produced, it stayed the same colour, the sodium only dissolved. When copper sulfate solution and steel wool were mixed, it was a chemical change because there was a completely new colour created, a pink-copper colour. When hydrogen peroxide and manganese dioxide were mixed, it was a chemical change because gas was produced, which can be seen in the bubbles that formed.