Round off each of the following numbers to the indicated number of significant digits, and write the answer in standard scientific notation. a. 0.0034159 to three digits b. 103.351x 102 to four digits c. 17.9915 to five digits d. 3.365 x 105 to three digits

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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.