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The triple point of a substance is the temperature at which it can exist in all three states i.e., solid, liquid, and gas in equilibrium.In this article, we’ll provide you with a detailed explanation about sublimation and whether it’s endothermic or exothermic?So, is sublimation endothermic or exothermic? It’s endothermic. This is because sublimation requires energy in some form to convert a solid to a gas. Usually, heat energy is supplied to conduct sublimation to bring about the physical change from a solid to a gas....

This metal has been used as the blue dye since ancient times and is also used in the treatment of cancer.It forms part of essential nutrients in your body and can also be used to improve food safety.Enough of the riddles, I hope you already know the answer. Yes, we are talking about “Cobalt”.Cobalt was officially discovered by Georg Brandt, a Swedish chemist in 1739. It does not occur in nature in a free state but, in combination with other elements....

It occurs as dark amorphous powder and has the highest melting as well as boiling point among metalloids.Also, it is the second hardest (after carbon) of all the elements present in the periodic table.We hope you understand what we are talking about. Yes, we are speaking of Boron.Although boron compounds such as borax (sodium tetraborate, Na2B4O7·10H2O) have been used by humans since ancient times, it was officially isolated by French chemists Joseph L....

A variety of woods occur in nature that is different in color, pattern, smell, etc. It acts as an insulator of heat and electricity and is also known for its acoustic properties.Most students have a question regarding if burning wood is also considered a chemical reaction. So, in this article, we will find out the answer to this question in detail. So, Is the burning of wood a chemical change?...

It is one of the constituents of gastric juice which aids in the digestion process.HCl can be synthesized according to the following reaction by warming aqueous solution crystals of sodium chloride with sulphuric acid.NaCl aq. + H2SO4 (aq.) ——-> 2 HCl (aq) + Na2SO4aq.It is soluble in water and combines with alkali to form salt and water.HCl is very useful.HCl can be distinguished from a base by using indicators like turmeric, pH paper, litmus paper, etc....

What do you think are fog lights made of?A gas which is very expensive but you still have liters of it in your home and easily find it on roadsides?Could not connect the dots? Well, obviously the riddle was too versatile.Let me tell you, we are talking about Neon.Yes, the same gas that makes roadside hoardings and signs and is also, used in vacuum tubes of your TV.Sir William Ramsay and Morris W....

Selenium was discovered in 1817 by Jöns Jakob Berzelius. He named it after the Greek goddess ‘Selene,’ which means ‘moon.’Selenium is a metalloid, having some characteristics of metals and some nonmetals. It naturally exists as a grey solid showing electrical conductivity and popularly used in solar panels, photocopiers, etc.Want to learn more about the uses of selenium and where you can find it in your daily life? Keep reading the article to learn 15 popular applications of selenium....

So, are lipids polar or nonpolar? The lipids are non-polar in nature due to the uniform distribution of charge among the carbon and hydrogen atoms present in the molecule. As there is no net partial charge on the overall lipid molecule, it is non-polar in nature. Why are Lipids Non-Polar? The water is a polar molecule as it is formed through a hydrogen bond. This bond is non-covalent in nature which develops due to the presence of partial positive and negative charge within the atom....

Aromatic hydrocarbons are unsaturated hydrocarbons that exhibit ring structures having single and double bonds.Benzene is a highly flammable and volatile compound having a gasoline-like smell. In Oil-refining processes, benzene is found in crude oil as a side product.It is widely used as a solvent or as an intermediate for the synthesis of various chemicals in the chemical industry. It is also used in the preparation of dyes, plastics, detergents, pesticides, drugs, etc....

Does kerosene go bad? Yes, kerosene does go bad. Kerosene can work with full efficiency for about five years. However, during its storage, water gets added to the fuel through the process of condensation. It results in the growth of mold and bacteria in kerosene, which breaks it down.How would you know whether kerosene has gone bad? Can you make it last longer? Can you ever use the expired kerosene?...

The compound is a colorless substance that is available in liquid or gaseous form.HCN has a very strong and pungent smell which is not favorable for humans. The smell can be categorized as being that of bitter almondsIt is considered to be a dangerous and poisonous substance that is stored carefully to avoid any leaks or combustion because the storage containers if exposed to extreme heat might cause explosions.The molecular weight of HCN is 27....

Nitrous acid has a relatively lower percentage of oxygen than nitric acid (HNO3). Quite unstable in nature, it was discovered by Scheele. It has a pungent odor and appears as a pale blue solution.Nitrous Acid is prepared by acidifying sodium nitrite and mineral acid. This is usually done at ice temperatures and the product HNO2 is produced in the reaction mixture itself.It can also be prepared by dissolving dinitrogen trioxide in water....

Methane is the most basic alkane and the primary component of natural gas. It is produced by anaerobic bacteria which are found in landfills and the gut of ruminants.It is one of the most significant greenhouse gases, with human activities accounting for about 70% of methane emissions. Pure methane is a high-energy feedstock with a 55.7 MJ/kg energy density that is used to produce electricity, heat homes, and for cooking....

The molar mass of water is 18 g/mole. The boiling and melting point of water are 373K and 273K, respectively.Water obtained through sea, lakes, taps, or even purifiers is not pure water. Water contains various impurities in the form of essential minerals and contaminants. We drink water after the removal of contaminants.When contaminants and essential minerals are removed from the water, we get distilled water.In this article, we will understand the meaning and properties of a pure substance and a mixture....

So, is NH3 an acid or base? NH3 is a weak base with pH 11 ( at standard conditions) but it is also considered amphoteric which means it can act as both acid and base under different conditions. NH3 under suitable condition act as a weak base and accepts H+ and forms its conjugate acid NH4+ and under different condition NH3 will act as an extremely weak acid and give away H+ ion to form its conjugate base NH2-....

So, is silver magnetic? Silver is weakly magnetic in the presence of an applied external magnetic field. Silver being diamagnetic in nature, it weakly repels a magnet in the presence of an applied external magnetic field. It is due to the availability of only one lone electron within the atom, which makes it a weak paramagnet but a strong diamagnet.The silver has chosen to be a diamagnet, with an anomaly....

Due to this reason, it is essential to study its Lewis structure. The existence of a strong shared covalent double bond between the two oxygen molecules within a single O2 molecule makes it crucial to study the Lewis structure even more. Significance of Lewis structure Lewis structure is a diagrammatic representation of showing the bond formation between the atoms of molecules.Furthermore, this structure also helps with determining the lone electrons existing within the molecule and how they will be acting in a bond formation....

Beer in markets is available in several flavors with a variety of alcoholic components which is what makes it a highly popular drink.The key ingredient behind the flavor of the beer is hops. Although, a high-quality beer does not get its perfection just by adding hops, but also from the right pH value which plays a crucial role in the beer brewing process.As said by professor Wendland himself, “The final pH of the beer gives you flavor and taste, and if you can keep track of that, this is how you make quality beer”....

So, what do we do when one of the light bulbs in our homes pop out? Do we throw them away for the landfills? Or is there a more responsible and environmentally safe way to do so?Are light bulbs recyclable? Yes, mostly light bulbs are recyclable. Not only is it the cleaner and greener option, but some light bulbs must also be recycled since the components of said light bulbs can cause severe damage to our environment....

In today’s world, there can be hardly anyone who is not familiar with tissue paper. It has become an item of daily use in today’s era. One advantage of its use is that it has also reduced the cost of water.Can you recycle tissue paper? No, you cannot recycle tissue paper. Most tissue papers are already made of paper recycled many times already and are not further recycled. Also, the fibers of these papers are far too tiny and wouldn’t be able to produce proper pulp....