Elements and Compounds Elements Certainly, you have seen gold, silver, or iron. No matter how far you divide pure gold, you will get nothing but gold. The same is applicable in the cases with silver or iron. When divided, the matter that does not yield anything but itself is called an element. Besides the above … Read more
Distillation and Sublimation The process of heating a liquid and turning it into gas is called evaporation or vaporization. When water from a hot tea is converted to vapors, that is an example of vaporization. Again, if we cool that vapor, the vapor turns into liquid. This process is called condensation. For example, water vapor … Read more
Melting and Boiling The process of transforming a solid matter into liquid by means of applying heat is called melting. At normal pressure (1 atmospheric pressure), the temperature at which a solid matter turns into a liquid state is called the melting point of that solid. Each pure solid matter has its own melting point, … Read more
What is alkyne? The bio- compound which has at least one carbon-carbon triple bond (-C≡C-) in its carbon chain is called alkyne.
What is the law of octaves? Similarities in properties of every eighth element are found by arranging the elements in the increasing order of their atomic mass. This is known as the ‘Law of Octaves’ in the periodic table.
Why is polymer important? Each of the tiny molecules which take part in the polymerization reaction is called a monomer. When many monomers join one another, the polymer is formed. Many polymers are produced naturally, such as cellulose and starch in plants. Protein is a polymer of amino acid. Astringent juice of rubber tress is … Read more
In the universe every rest and speed is relative. No rest or motion is absolute. Explain it with example. Actually whether an object is at rest or not depends on the reference object. If the reference frame is actually in rest, the object will be actually in rest with respect to that frame. This type … Read more
Burning of a Candle and the Three States of Wax Wax is a mixture of various hydrocarbons. Organic compounds made of hydrogen and carbon are known as hydrocarbons. In the burning of wax, three states of matter can be observed simultaneously. There is a thin liner inside the wax. When we add fire to it, … Read more