Study the information given below:
1) Some substances are made up of two or more elements combined together chemically.
2) Properties of these substances are different from the elements that make them.
3) This substance cannot be broken down by physical methods.
Which of the following substance has the properties listed above?
Sugar
The three given properties are those of compounds. In the given options, sugar is a compound. Iodine and calcium are pure elements while air is a mixture of gases.