1. Why are the calibration marks on laboratory beakers taken only to be an approximate guide to volume? 2. How does the 10.00 ml. volume dispensed by the volumetric pipet compare to the volumes as determined using a graduated cylinder or beaker? Is the pipet more or less precise? 3. Which measuring device (beaker graduations, graduated cylinder, pipet, buret) gives the greatest precision?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.