Purpose: in This Activity You Will Investigate the Effect of Iron on Drink Mixes

Kool Reactions

Intro: Kool-Aid and other powered drink mix packages give directions to prepare in glass, plastic, or nonmetal pitchers. The “fine print” on some packages states “Do not store in metal container”. Why? What happens to beverage mixtures in the presence of metals? Purpose: In this activity you will investigate the effect of iron on drink mixes. Safety: Caution: steel wool can cut your hands. Procedure: 1) Measure 60mL of the prepared drink into each of the 3 containers. 2) Measure 2.4g fine steel wool. Repeat for course steel wool. Compare the 2 samples. 3) Rinse the steel wool samples for about 45 seconds in hot water bath by dipping samples in and out of water for 45 seconds. (Steel wool has an oil coating to prevent rusting in air. Rinsing removes the oil.) Squeeze samples gently to remove excess water. Blot dry. Fluff each steel wool sample to approximate volume of beverage in each container. 4) Add steel wool samples to labeled containers. Push samples down so they are mostly submerged. Make observations every 5 min for evidence of any reaction and record in data table. Place containers on piece of white paper to aid in color observation. 5) After reaction in fine steel wool container is complete measure pH of beverage in the control and fine steel wool containers using pH paper. Record in the data table. Data Table:Time Control Fine Steel Wool Course Steel Wool 0 min 5 min 10 min 15 min 20 min 25 min 30 min pH = pH = Conclusions: Refer to the question. Show all work including units and substance. 1) How many atoms Fe are present in 2.4g Fe? (55.85g/mol) (1mol=6.022x1023atoms) ______2) If the same number of atoms of iron are present in both the coarse and fine steel wool samples, why is the reaction time different for the two samples? ______3) Predict reaction time for a solid 2.4g bar of iron with 60.mL of drink mix solution. ______4) When opened months later, is a red, noncarbonated, artificially flavored drink in an aluminum can expected to be the same color as when it was canned? Explain. ______Kool Reactions

Intro: Kool-Aid and other powered drink mix packages give directions to prepare in glass, plastic, or nonmetal pitchers. The “fine print” on some packages states “Do not store in metal container”. Why? What happens to beverage mixtures in the presence of metals? Purpose: In this activity you will investigate the effect of iron on drink mixes. Safety: Caution: steel wool can cut your hands. Procedure: 1) Measure 60mL of the prepared drink into each of the 3 containers. 2) Measure 2.4g fine steel wool. Repeat for course steel wool. Compare the 2 samples. 3) Rinse the steel wool samples for about 45 seconds in hot water bath by dipping samples in and out of water for 45 seconds. (Steel wool has an oil coating to prevent rusting in air. Rinsing removes the oil.) Squeeze samples gently to remove excess water. Blot dry. Fluff each steel wool sample to approximate volume of beverage in each container. 4) Add steel wool samples to labeled containers. Push samples down so they are mostly submerged. Make observations every 5 min for evidence of any reaction and record in data table. Place containers on piece of white paper to aid in color observation. 5) After reaction in fine steel wool container is complete measure pH of beverage in the control and fine steel wool containers using pH paper. Record in the data table. Data Table:Time Control Fine Steel Wool Course Steel Wool 0 min 5 min 10 min 15 min 20 min 25 min 30 min pH = pH = Conclusions: Refer to the question. Show all work including units and substance. 1) How many atoms Fe are present in 2.4g Fe? (55.85g/mol) (1mol=6.022x1023atoms) ______2) If the same number of atoms of iron are present in both the coarse and fine steel wool samples, why is the reaction time different for the two samples? ______3) Predict reaction time for a solid 2.4g bar of iron with 60.mL of drink mix solution. ______4) When opened months later, is a red, noncarbonated, artificially flavored drink in an aluminum can expected to be the same color as when it was canned? Explain. ______