Measurement and lab skills

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  Triple Beam Balance

  Learn how to determine the mass of an object using a triple beam balance. The mass of a variety of objects can be determined using … this simulated version of a common real-world laboratory tool for measurement.

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  Estimating Population Size

  Adjust the number of fish in a lake to be tagged and the number of fish to be recaptured. Use the number of tagged fish in the catch … to estimate the number of fish in the lake.

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  Identifying Nutrients

  Use a variety of real-world lab tests to analyze common food samples in order to determine if the food is a carbohydrate, a protein, or … a lipid. Tests that can be performed include: Benedict, Lugol, Biuret, and Sudan Red.

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  pH Analysis

  Test the acidity of common substances using pH paper. Materials including soap, lemon juice, milk, and oven cleaner can be tested by … comparing the color of pH strips to a standard scale.

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  pH Analysis: Quad Color Indicator

  Test the acidity of many common everyday substances using pH paper (four color indicators). Materials including soap, lemon juice, milk, … and oven cleaner can be tested by comparing the color of the pH strips to the calibrated scale.

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