Question

Which of the following are the correct examples of matter?
A.Glass bottle, water and noise
B.Air, wood and vacuum
C.Silver foil, hot air and chalk
D.Sand, oxygen and light flash

Answer 1

Hint:Matter refers to that of which physical objects are composed. Matter is a broad word that applies to anything perceived, or known to be occupying space: solid matter; gaseous matter. All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons. So, first we will look at the options which have no mass and don't occupy any space.

Complete answer:
The term matter refers to anything that occupies space and has mass or in other words we can say that, the stuff that the universe is made of is matter. All matter is made up of substances termed as elements, which have specific chemical and physical properties and cannot be broken down into other substances through ordinary chemical reactions. Some examples of matter are - Wood, Machines, Bottle, Water, Sand etc.
Air (and all other gases) are invisible to the eye, have very small masses compared to equal amounts of solids and liquids, and are quite easy to compress (change volume). Today, we can measure the mass of a small balloon when it is deflated and then blow it up, tie it off, and measure its mass again to detect the additional mass due to the air inside. The mass of air, under room conditions, that occupies a one-quart jar is approximately 0.0002 pounds. This small amount of mass would have been difficult to measure in times before balances were designed to accurately measure very small masses. In option A, all are matters except Noise.
In option B, all are matters except Vacuum.
In option C, all are matters.
In option D, all are matters except light flash.
Thus, now we know that Noise, vacuum and light flash are not examples of matter.

Therefore, the correct answer is option (C).
Note:
Nowadays, scientists are able to compress gases into such a small volume that the gases turned into liquids, which makes it clearer that gases are matter.