CHM 1025 Lecture Notes - Lecture 3: Iron(Iii) Oxide, Noodle, Junkers J 1
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If it is a pure substance, classify it as an element or a compound; if it is a mixture, classify it as homogeneous or heterogeneous. (a) a lead weight (b) seawater (c) distilled water (d) italian salad dressing. Begin by examining the alphabetical listing of pure elements inside the back cover of this text. If the substance appears in that table, it is a pure substance and an element. If it is not in the table but is a pure substance, then it is a compound. If the substance is not a pure substance, then it is a mixture. Think about your everyday experience with each mixture to determine if it is homogeneous or heterogeneous. (a) lead is listed in the table of elements. It is a pure substance and an element. (b) seawater is composed of several substances, including salt and water; it is a mixture.
