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Exploring the Reaction Between Calcium and Water: Laboratory Analysis

This laboratory experiment investigates the reaction between calcium metal and water. It aims to observe the products formed and analyze the chemical changes that occur. The procedure includes filling a test tube with water, adding calcium, and observing gas evolution and any color change with phenolphthalein. As a result, gas is produced, which can be tested with a flaming splint, and a liquid that reacts with phenolphthalein is formed. Observations and insights will be summarized in the discussion phase, followed by a conclusion outlining the findings.

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Exploring the Reaction Between Calcium and Water: Laboratory Analysis

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Presentation Transcript

  1. Calcium & Water LAB Page 151

  2. Reactants  Products 1. calcium + water  gas (?) + liquid (?) • gas + flaming splint  ? • liquid + phenolphthalein  ? • water + phenolphthalein  ?

  3. Report • Introduction • a brief description (one short paragraph) of the purpose of the lab • Procedure • Describe step by step what you did in past passive tense. • “The test tube was filled with tap water.” • Observations = Q9 • Descriptions of all materials and reactions • Discussion • See next slide • Conclusion • Brief summary of your findings • References • Textbook plus at least 2 other sources, APA format

  4. Discussion (see page 151) • Q10 = purpose of splint test? • Q11 = purpose of phenolphthalein test? • What is phenolphthalein? • How does the colour change help to identify the liquid product? • Q12 = what evidence indicated chemical changes were happening? • Q13 = why is it unsafe to touch Ca metal (be specific) • Write word and balanced chemical equations for reactions #1 (Ca + H2O) and #2 (splint test).

  5. Marking Scheme

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