Calcium & Water LAB Page 151

Reactants  Products 1. calcium + water  gas (?) + liquid (?) 2.gas + flaming splint  ? 3.liquid + phenolphthalein  ? 4.water + phenolphthalein  ?

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

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 + H 2 O) and #2 (splint test).

Marking Scheme INQ COM MC Introduction /1 Materials /1 Procedure /3 Results (Q9) /4 Discussion (Q10) /2 Q11 (phenolphthalein) /2 Q12 /2 Q13 /1 Word & Balanced Chemical Equations /4 Conclusion /1 References /1 TOTAL /8 /11 /3 /22