Reactions between Metals and Metal Ions Experiment #15 Introduction Experiment Overview A sample of a metal consists of Metal samples are placed in aqueous electrically neutral atoms that have not solutions. Evidence of reaction is lost electrons. Common substances recorded, and the metals are ranked in such as paper clips, aluminum foil, order of decreasing reactivity. copper wire and gold jewelry are composed of neutral atoms of these Procedure metals held together by metallic Copy the slipsheet into your lab manual. bonding. When metals combine with other elements to form compounds, Obtain samples of aluminum, iron, however, they lose one or more magnesium, copper, zinc and lead. electrons to form positive ions. Using a slip sheet, test the following solutions with each metal: aluminum Consider a piece of metal (neutral chloride, copper(II) sulfate, iron(III) atoms) dipped into a solution containing nitrate, lead(II) nitrate, magnesium positive and negative ions. There are nitrate, zinc nitrate, hydrochloric acid three possibilities for the neutral metal and nitric acid. Record any and all atoms: (1) They can gain electrons from evidence of reaction. the negative ions. (2) They can lose electrons to the positive ions. (3) They Data Analysis can fail to react at all. Team observations are compared in class discussion. Rank the metals in Prelab Reading Assignment decreasing order of reactivity. Compare Section 8.6-8.7 class data with an accepted Activity Series. Experimental Question What may happen when a metal comes Results in contact with negative and positive Write a balanced chemical equation for ions dissolved in an aqueous solution? each reaction that occurred.
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