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Chemistry LibreTexts

1: Matter- Its Properties and Measurement

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    • 1.1: The Scientific Method
      Scientists search for answers to questions and solutions to problems by using a procedure called the scientific method. This procedure consists of making observations, formulating hypotheses, and designing experiments, which in turn lead to additional observations, hypotheses, and experiments in repeated cycles
    • 1.2: Properties of Matter
    • 1.3: Classification of Matter
      Matter is anything that occupies space and has mass. The basic building block of matter is the atom, the smallest unit of an element that can enter into combinations with atoms of the same or other elements. In many substances, atoms are combined into molecules. On earth, matter commonly exists in three states: solids, of fixed shape and volume; liquids, of variable shape but fixed volume; and gases, of variable shape and volume.
    • 1.4: Measurement of Matter - SI (Metric) Units
    • 1.5: Density and Percent Composition - Their Use in Problem Solving
      Density and percent composition are important properties in chemistry. Each have basic components as well as broad applications. Components of density are: mass and volume, both of which can be more confusing than at first glance. An application of the concept of density is determining the volume of an irregular shape using a known mass and density. Determining Percent Composition requires knowing the mass of entire object or molecule and the mass of its components.
    • 1.6: Uncertainties in Scientific Measurements
    • 1.7: Significant Figures
    • 1.E: Exercises

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