Shake test tube and mix, then observe if liquids are soluble or insoluble. 2. Chemical Properties Reactions of elements o Inspect a 5cm copper wire. Hold the wire in a crucible tongs and using the burner heat the wire until it glows red. o Allow the wire to cool and inspect it again. State whether a physical change or chemical. Reactions of compounds o Place 1 g of ammonium bicarbonate into a dry test tube. Using a test tube holder, gently heat the test tube with a cool flame and observe any change. o Observe as a physical or chemical change o Place 1 g of potassium bicarbonate into a dry test tube. Using a test tube holder, gently heat the test tube with a cool flame and observe any change. o Observe as a physical or chemical change Reactions of solutions o add 20 drops of sodium carbonate and 20 drops of sodium sulfate into separate test tubes. o Add 20 drops of dilute hydrochloric acid. Record any changes o Observe as a physical or chemical change o add 20 drops of calcium nitrate and 20 drops of copper nitrate into separate test tubes. o Add 20 drops of dilute ammonium hydroxide to each. Record any changes o Observe as a physical or chemical change
Data: 1. Physical Properties a) Physical State Element Symbol Physical State Color Metal/Nonmeta l Copper Cu solid Brownish-red Metal Hydrogen H gas colorless Non-metal Magnesium Mg solid gray Metal Neon Ne gas colorless Non-metal Oxygen H2O gas colorless Non-metal Silicon Si - - - Sulfur S solid yellow Non-metal Tin Sn solid Gray/silver Metal Zinc Zn solid Gray/silver Metal b) Boiling Point Boiling point of methyl alcohol (65.0°C) _63-degree Celsius_ Boiling point of unknown (_______) c) Solubility of a Solid in water _73-degree Celsius_ Copper sulfate crystal and water _soluble____
Calcium carbonate and water d) Solubility of liquid in water ___insoluble___ Methyl alcohol and water ____soluble___ Amyl alcohol and water __insoluble____ 2. Chemical Properties a) Reactions of Elements Copper wire and heat Chemical change b) Reactions of Compound Ammonium bicarbonate and heat physical change Potassium bicarbonate and heat no change c) Reactions of solution Sodium carbonate and hydrochloric acid chemical change Sodium sulfate and hydrochloric acid no change Calcium nitrate and ammonium hydroxide chemical change
Copper (II) nitrate and ammonium hydroxide chemical change Discussion: My data was good because, during the first leg of the experiment where we were instructed to identify the physical properties of each element physically govern to us. We carefully observed each test
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- Fall '19