A student is given a 6.216 g mixture of iron filings, calcium chloride, and sand. He separates the mixture and recovers 2.524 g of iron, 1.932 g of sand, and 1.523 g of calcium chloride. Calculate the percentage of each component he recovered from the original mixture and the percent of material he lost during the separation process. 3.

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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.