Ethanol is a substance that is created from the fermentation of food crops in factories, while methanol is a highly poisonous chemical produced synthetically. Both substances are variants of alcohol that can be used as energy sources, but have different methods of production and practical uses.Continue Reading
Ethanol is a colorless liquid usually created from corn or sugarcane, and is a primary ingredient in alcoholic beverages. Once ingested, it causes intoxication and drowsiness. It is also used as an alternative fuel source: Some cars are designed to run on up to 85 percent ethanol. Its use as a fuel source is hotly debated, due to the sheer amount of corn that must be used in its production instead of as a source of food. In addition to alcoholic beverages and alternative fuel, ethanol is found in a multitude of household products, including antibacterial hand gels, rubbing alcohol and paint.
In contrast to ethanol, methanol is highly poisonous to humans, even in small amounts. Less than half a teaspoon of methanol can cause blindness. The primary use of methanol is in the formulation of chemicals like formaldehyde. It is less flammable than gasoline and can be put out with water, making it ideal for use in race cars and stunt cars.Learn more about Chemistry
Hydrogen is used to manufacture the important chemical compounds ammonia and methanol, according to the Essential Chemical Industry. It is also used in such oil refinery processes as reforming, in which sulfur compounds are removed from petroleum to improve the petroleum's quality.Full Answer >
Because the process during digestion causes food to become a new substance, digestion is a chemical change. A physical change occurs when a subject changes its shape, size or state.Full Answer >
Increasing the surface area of a substance involved in a chemical reaction exposes more of the material to the reactant, thereby speeding up the reaction process. This is why chemists often use powder, filings and other forms that maximize surface area.Full Answer >
To be classified as a mineral, a substance must have the following four characteristics: it must be organic, naturally-occurring, solid and a have a definite chemical composition. A substance must also have an ordered internal structure.Full Answer >