The major defining feature of metals is that electrons flow relatively freely between atoms in any object composed of two or more metal atoms, whereas electrons around nonmetals are more tightly bound to their respective nuclei or within individual chemical bonds. This results in other significant features of metal, particularly their high thermal and electrical conductivity. A large majority of known elements are metals.
Metals have several other common features that distinguish them from nonmetals, but few are universal. Almost all metals are solid at room temperature, but a large number of nonmetals are gaseous. Pure metals tend to have a shine or luster, but nonmetals tend to be dull in appearance. They tend to have relatively high densities. They also tend to be malleable and ductile, which means that they can be hammered and drawn into wires. However, solid nonmetals tend to be hard and brittle.
Metals lose electrons easily, and they often corrode easily. The oxides of metals tend to be basic, but the oxides of nonmetals tend to be acidic. Unlike electricity and heat, nonmetals conduct light better than metals, and thin sheets of metal are usually opaque while thin sheets of nonmetals are usually translucent or even transparent.Learn More
Cracking is the chemical process of breaking down large hydrocarbon molecules into useful products. For example, cracking breaks down the hydrocarbon molecules of decane into propene and heptane.Full Answer >
Glucose is the only monosaccharide present in maltose. Each unit of maltose is composed of two units of glucose. Its isomer, isomaltose, is also composed solely of glucose.Full Answer >
The element that has the largest atomic radius is cesium. It has an atomic radius of 298 pm, or picometers. An alkali metal, cesium is so active that it instantly explodes if dropped into cold water. It's also one of the few metals that becomes a liquid at close to room temperature. Its melting point is 83.19 degrees Fahrenheit.Full Answer >
Hydrogen peroxide, also known as dihydrogen dioxide, has a pH level anywhere from 1 to 5, depending on the solution's concentration and how it is produced. Many hydrogen peroxide solutions contain stabilizers that affect the product's pH. The solution's pH level can be increased or decreased depending on the exact stabilizer that is used.Full Answer >