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Big Science 6 Water's Props 05 Measuring Relative Surface Tension On a Coin

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This is an excerpt from Amazon's popular line of Bossy Brocci Math and Big Science workbooks! [it's pronounced like "Brawsee"]

Printing should be done in Landscape and DOUBLE-SIDED, with the flip being along the 'SHORT' side.

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Students will:

1) Conduct a simple experiment comparing the relative Cohesion & Surface Tension of 4 liquids:
Hot Soapy Water
Veggie Oil
Hot Water
Cold Water

[Note: all that's needed are the 4 liquids, and some droppers & coins]

2) Record in a Data Pattern Table their experimental Observations & Conclusions:
Polar or NONpolar
Number of Drops before bubble breaks
Relative Cohesion ranking: 1, 2, 3, or 4 (1 being weakest)
Relative Surface Tension ranking: 1, 2, 3, or 4 (1 being weakest)

3) Fill-in a total of 16 cells in a 1 Data Table
4) Draw or Illustrate the results of their experiment in a 2nd Data Pattern Table
5) Draw diagram depicting a centrally-located H2O molecule Hydrogen-bonded to 4 surrounding H2O molecules - AND Label the partial Positive and Negative sides of all all H2O molecules
6) Answer 23 Fill-in-the-Blank and Multiple-choice questions based on their experimental Calculations & Observations in the preceding Data Tables & Diagrams
7) Discover that Water's Hydrogen-bonding gives it a relatively High Cohesion and High Surface Tension
8) Discover that factors such as Polarity, Hydrogen-bonding, Temperature and Solutes such as Soap affect Surface Tension
9) Be compelled to present their work in a neat & orderly format
10) Be trained to Define and Explain Water's High Surface Tension methodically & systematically

Printing should be done in Landscape and double-sided, with the flip being along the 'short' side

Science Chemistry Physical Science Water's Unique Special Physical Properties Polar Water's Polarity Water's Hydrogen Bonding Hydrogen-Bonding between Water Molecules Water's Cohesion Cohesion between Water Molecules Adhesion Water's Capillary Action Capillary Action of Water Melting Point Boiling Point Water's Boiling Point Colligative Properties Heating Graph of Water Water's Heating Curve Phase Change Phase Change Diagram Phase Changes Water's Density Density of Water Density Anomaly Density Inversion Water's Density Anomaly Inversion Water's Surface Tension Measuring Surface Tension Water's Specific Heat Capacity Water's Latent Heat Enthalpy of Fusion Water's Latent Heat Enthalpy of Vaporization Dissolving Homogenous Mixture Solution Heterogeneous Mixture Miscible Immiscible Soluble Insoluble Solubility Solvent Solute Water is the Universal Solvent Solubility and Temperature
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