INQUIRY ACTIVITY #2 SNC 2D1

Discuss: are acids and bases IONIC or MOLECULAR? Why? PROBLEM You are presented with 6 solutions in test tubes: Solution 1 - HCl, diluted Solution 2 - NaOH, diluted Solution 3 - tap water Solution 4 - distilled water Solution 5 – NaCl + water Solution 6 – table sugar + water Some physical properties: clear, colourless solutions Problem: A. Classify each solution as ionic or molecular, with 2 points of evidence. B. Classify each solution as either an acid or a base, with 2 points of evidence. Discuss: are acids and bases IONIC or MOLECULAR? Why? Disucss: How does your evidence support Arrhenius’ definition of acids & bases?

Research/Observation INQUIRY PROCESS Research/Observation Question Theory Hypothesis Test

FRIDAY OCT. 25, 2013: MONDAY, OCT. 21, 2013: EXPECTATIONS FRIDAY OCT. 25, 2013: Use the given equipment + materials to address this problem and submit your lab report at the end of class: (water, conductivity tester, scoopulas, stir sticks, magnifying glass, beakers + graduated cylinders, test tubes, test tube racks, various indicators: methyl orange, bromthymol blue, phenolphthalein, red+blue litmus paper, methyl red, grid paper, 6 different solutions) MONDAY, OCT. 21, 2013: Make use of the computer lab today only!

Include the following headings: REPORT Include the following headings: Research/Observation Question (How?, Why?) Theory/Model (suggest an answer or procedure) Hypothesis (formal & detailed) or Prediction (informal: “I think…”) Test showing Evidence (‘results’ can include tables, notes, diagrams, etc.) Analysis (include calculations, graphs, etc. here) Conclusions and Inferences (refer to results/analysis, answer questions, pose new questions, critique your inquiry process, suggest further investigations) * Remember to cite your sources