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16 December, 22:13

Classify each of the following as an element, a compound, or a mixture:

(a) copper

(b) water

(c) nitrogen

(d) sulfur

(e) air

(f) sucrose

(g) a substance composed of molecules each of which contains two iodine atoms

(h) gasoline

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Answers (2)
  1. 17 December, 00:50
    0
    (a) Element.

    (b) Compound.

    (c) Element.

    (d) Element.

    (e) Mixture.

    (f) Compound.

    (g) Element.

    (h) Mixture.

    Explanation:

    Hello,

    Matter could be widely classified as elements which are defined as single atoms of a particular element in the periodic table, compounds which are composed by two or more different bonded atoms (elements) in the same structure and mixtures which are composed by two or more atoms or substances that are not chemically bonded. In such a way the answers are:

    (a) Element: one copper atom.

    (b) Compound: two hydrogen atoms and one oxygen atom.

    (c) Element: one nitrogen atom.

    (d) Element: one sulfur atom.

    (e) Mixture: about 79% of nitrogen and 21% of oxygen.

    (f) Compound: constituted by carbon, hydrogen and oxygen.

    (g) Element: this is more specifically a molecule since two iodine atoms are contained.

    (h) Mixture: it is a mixture of many liquid aliphatic and aromatic hydrocarbons, ranging between C4 and C12 carbon atoms.

    Best regards.
  2. 17 December, 02:09
    0
    A) an element

    B) a compound

    C) an element

    D) an element

    E) a mixture

    F) a compound

    G) an element

    H) a mixture
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