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 + H2O) 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