Top 10 chemistry facts Selected as the most interesting among chemistry related questions in Chemistry quiz Does the candle burn more or less violently in zero gravity?Less violently. In zero gravity no convection occurs, that normally shapes the flame, disperses CO2 and brings fresh air to the wick. Without convection, CO2 from combustion does not disperse as readily and tends to smother the flameCreated by: Kasiafire facts » What color is octopus blood?Blue. Both squids and octopuses have blue blood. They use an oxygen-carrying molecule in their blood called hemocyanin that contains copper. In cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than hemoglobin oxygen transportation.Created by: Kasiablood facts » What is the main difference between Coca-Cola sold in the US, and the Coca-Cola sold in the EU?Sugar. In the United States, Coca-Cola uses high-fructose corn syrup instead of sugar (sacharose) as its main sweetener. There is a small production of sugar-based "Kosher for Passover" Coca-Cola, as Ashkenazi Jews do not consume high fructose corn syrup during Passover.Created by: Kasiadrinks facts » Why were photographic prints sepia toned?For improved resistance. Sepia toning enhances archival qualities of the photos. Chemicals are used to convert the metallic silver in the print to a sulfide compound, which is at least 50% more stable than silver.Created by: globalquiz.orghistory of photography facts » Why is White Sands Desert in New Mexico so purely white?It is gypsum. White Sands, having 442 total square kilometers of dune fields, is the world's largest surface deposit of gypsum. Unlike other desert sands, it is cool to the touch, due to the high rate of evaporation of surface moisture and the fact that the sands reflect, rather than absorb, the sun's rays.Created by: Debbie Foxsoil facts » What is inside Swiss cheese holes?Carbon dioxide is produced by bacteria feeding on the lactic acid. In the Middle Ages, the holes were considered a sign of imperfection and cheese makers would try to avoid them.Created by: Kasiacheese facts » Lactose intolerance is a frequent reason to avoid milk and dairy products. What is lactose?A sugar. Lactose is a disaccharide sugar that makes up around 2-8% of milk. Lactose intolerance is not an allergy. It is the inability to digest lactose due to insufficient levels of lactase, the enzyme that metabolizes lactose into glucose and galactose.Created by: Kasiafood facts » How does the candle flame look like in zero gravity?It is spherical. The shape of flame is created by convection under normal gravity conditions. Without gravity, no convection occurs and the flame becomes spherical.Created by: Kasiaastronautics facts » What was included in the original Pepsi-Cola recipe?Digestive enzyme. Pepsi Cola, first introduced in 1898, was named after pepsin (enzyme) and kola (nuts). In 1931, the company entered bankruptcy and changed hands. The new owners changed the recipe to resemble more Coca-Cola.Created by: Kasiabeverages facts » This is an iron buoy. Where were its atoms formed?In a high-mass star preceding Sun. Radioactive nickel-56 (which decays to the most common isotope of iron) is the last element to be produced before the collapse of a supernova. That is why the iron was abundantly scattered into space after the supernova explosion.Created by: life-o-holicelements facts » Play chemistry quiz and see all the questions.