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Measuring Matter: Mass and Volume Techniques

This chapter explains how to accurately measure mass and volume using tools such as graduated cylinders and measuring cups. It covers essential techniques for reading measurements at eye level and understanding the meniscus in liquid measurements. It introduces the volume calculation for solids using formulas and the displacement method for irregularly shaped objects. The process involves submerging the object in water, measuring the change in water level, and subtracting volumes. Additionally, it discusses converting mass to volume using proportions for measuring large and small quantities.

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Measuring Matter: Mass and Volume Techniques

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  1. Chapter 16.2 • Measuring Matter

  2. Measuring mass and volume

  3. Using a graduated cylinder or measuring cup • Read the mark on the cylinder/cup at eye level • Read the mark on the bottom of the curve of the meniscus. (bottom of the curve)

  4. Calculating volume of solids using formulas p. 280

  5. Find the volume of an irregular shaped object • Done using a technique called displacement • displacement means to “take the place of”

  6. How to use displacement • Fill a graduated cylinder with water. (50 ml) • Put the object in the water • Find the new amount. This is the volume of water and object. • Subtract the ending volume from the beginning volume. • This is the volume of the irregular object.

  7. Grams are also used to measure the amount of material instead of actual volume.

  8. Measuring very large or very small quantities

  9. Uses proportions • mass of the sample / volume of the sample = mass of the object / mass of the object

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