Substance
Substance
Introduction:
There are large numbers of things around us which we see and feel. For example, book, glass, pens etc. The space occupied by the book is called its volume. If we pick up the book, it has some mass. Examples of matter include wood, cloth, paper etc. Matter offers resistance by the fact that we cannot displace an object from one place to another without applying force. Thus matter can be defined as “anything that occupies space, has mass and offers resistance is called matter.” Atom is the smallest unit of an element. Everything in this universe is made up of matter. Matter is made up of extremely small particles called atoms. For example, smallest piece of copper, gold or silver or any other element is called atom. An atom cannot be broken down into simpler substances by any physical or chemical methods.
Substance: is a kind of matter that cannot be separated into other kinds of matter by any physical process. For example, sugar dissolved in water can be separated from water by evaporating the water. Here, sugar is a substance which cannot be broken into its components by any physical process. Similarly, sodium chloride, lime (calcium oxide) are all substances
Which of the following is the smallest unit of an element ? | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct : (a) Anything that occupies space and has mass is called atom. (b) A pure substance consists of a single material. (c) Water consists of atoms of hydrogen and oxygen. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following is the property of matter ? | |||
| Right Option : C | |||
| View Explanation | |||
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