Measurements and Calculations

Pre-AP Chemistry Modern Chemistry (2006) Chapter 2 Notes-Measurements and Calculations 2.1 The Scientific Method The process that researchers use to carry out their investigations is often called the scientific method. The scientific method is a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data. 2.2 Units of Measurement Units of Measurement Measurements are quantitative information. They represent quantities. A quantity is something that has magnitude, size, or amount. A quantity is not the same as a measurement. For example, the quantity represented by a teaspoon is volume. The teaspoon is a unit of measurement, while the volume is a quantity.