Chemistry questions This is a list of recently added questions about chemistry. Play chemistry quiz and see all the questions. How many patents was Marie Curie granted?None. Marie and Peter Curie refrained from patenting their newly developed methods to let the humanity benefit from these inventions. Created by: smyruvery hard 39% sevenseven57twotwo179oneone17nonenone163physics riddles » How can you cut a diamond?Using a diamond. Diamond is a hardest substance in the world and hence as a very strong bonding between the atoms. hence it can be cut only by using a diamond Created by: Shruthi Srinivasanvery easy 82% using a knifeusing a knife26using a diamondusing a diamond1411using goldusing gold54using a gasusing a gas227materials riddles » What is the chemical formula of dry ice also known as cardice?CO₂. Dry ice is the solid form of carbon dioxide. In temperatures above −78.5 °C (−109.3 °F) it will not melt but sublimate, that means transforming straight from solid form into gas one without liquid phase.Created by: Justa87hard 47% H₂OH₂O351CO₂CO₂1125CH₄CH₄357HCOOHHCOOH534nature riddles » What is dry ice?Solidified CO2. Dry ice is used in refrigeration. It has an interesting property: it maintains a constant temperature of -78.5C in a warmer environment. This is because dry ice does not melt and sublimes directly into the gaseous form.Created by: Niezgodnavery easy 92% glacierglacier379solidified CO2solidified CO210386legendary alchemical substancelegendary alchemical substance261meringue dessertmeringue dessert173ice riddles » Which substance is the most bitter?Denatonium benzoate. Denatonium, usually available as denatonium benzoate and as denatonium saccharide, is the most bitter chemical compound known, with bitterness thresholds of 0.05 ppm for the benzoate and 0.01 ppm for the saccharide.Created by: Bartoszhard 44% salicinsalicin410absintheabsinthe1093denatonium benzoatedenatonium benzoate1709benzoic acidbenzoic acid592cuisine riddles » What is the chemical symbol of mercury?Hg. The Latin name of mercury is "hydrargyrum" (meaning liquid silver - quicksilver), hence the symbol Hg. Ru is the chemical symbol of ruthenium, Rh - rhodium, Mt - meitnerium.Created by: globalquiz.orgvery easy 85% RuRu163RhRh414HgHg3599MtMt53chemical elements riddles » What is the chemical symbol of manganese?Mn. Mg is the chemical symbol of magnesium. Mo is the chemical symbol of molybdenum.Created by: globalquiz.orgvery easy 80% MgMg498MoMo48MnMn2896MaMa178chemical elements riddles » What is the chemical symbol of tin?Sn. The Latin name of tin is "stannum", hence the symbol Sn. Ti is the chemical symbol of titanium. Sb is the chemical symbol of antimony.Created by: globalquiz.orgvery easy 86% TiTi201TT137SnSn3355SbSb208chemical elements riddles » What is the chemical symbol of silver?Ag. The Latin word for silver is "argentum", hence the symbol Ag. S is the chemical symbol of sulfur, Si - silicon, Au - gold.Created by: globalquiz.orgeasy 78% SS73SiSi133AuAu633AgAg3004chemical elements riddles » What is the chemical symbol of lead?Pb. The Latin name of lead is "plumbum", hence the symbol Pb. La is the chemical symbol of lanthanum, O - oxygen, Db - dubnium.Created by: globalquiz.orgvery easy 94% LaLa71PbPb3688OO109DbDb30chemical elements riddles » Play chemistry quiz and see all the questions.