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ChemistryChemistry
10 September, 12:18

Which is a compound.

A. Water B. Iodine c. Calcium

D. Air

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Answers (2)
  1. 10 September, 12:51
    0
    A compound can be defined as a substance which is made up of 2 or more different types of atoms or ions combined in a definite proportion by chemical bonds.

    A. Water - It is made up of 2 hydrogen atoms and 1 oxygen atom joined by chemical bonds. Hence, it is a compound.

    B. Iodine - It generally exists as I2. thus it is made up of only 1 type of atoms. ∴ It is not a compound.

    C. Calcium - It is an element not a compound.

    D. Air - Air has many components which are not chemically bonded to each other, thus air is a mixture and not a compound.

    Hence, Only water is a compound among water, iodine, calcium and air.
  2. 10 September, 15:14
    0
    C. Is the answer. Water is a compound
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