CHEM UN1403 Study Guide - Midterm Guide: Binary Phase, Copper(I) Chloride, Royal Aircraft Factory F.E.2
18 Dec 2020
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Chapter 1 the atomic nature of matter: substances that cannot be decomposed into two or more simpler substances by chemical means are called, pure substances, compounds, molecules, elements, none of these. Ans: d: a pure solid decomposes on heating, yielding a solid and a gas, each of which is a pure the original solid is not an element. substance. From this we can conclude with certainty that a: at least one of the products is an element, both products are elements, both (a) and (b, none of these. Ans: a: the gases h2, o2, and n2 are considered to be, elements, compounds, atoms, mixtures, none of these. Ans: a: potassium carbonate, calcium chloride, and iron(iii) oxide are all considered to be, elements, compounds, atoms, mixtures, none of these. Ans: b: a sample contains copper(i) chloride at a purity of 95. 2%.
