Zinc has many physical properties; the metal is blueish-white, brittle at ambient temperatures and has a low boiling point and low melting point. The metal is lustrous, but when the metal is seen in a commercial grade, it has a dull finish to it.
Zinc is a dense metal, though less dense than iron, meaning that it is heavy and will sink in water. The physical properties of zinc changes some depending on the temperature it is exposed to. Normally hard and brittle, it becomes malleable between 212 and 320 degrees Fahrenheit. Once the metal hits 410 degrees it becomes brittle once more. When viewing the structure of the metal, it has a very clear hexagonal crystal structure.Learn More
A metallic bond forms when the valence electrons are not associated with a particular atom or ion. Instead, they exist as a "cloud" of electrons around the ion centers.Full Answer >
The total number of atoms in a molecule of sucrose is 45. This total is calculated by adding the number of atoms noted in its molecular formula, C12H22O11.Full Answer >
Three scientists independently discovered the element boron in 1808: Sir Humphrey Davy in London and Joseph Gay-Lussac and L. J. Thénard in Paris. Davy produced boron by combining potassium and boric acid in a chamber filled with hydrogen, while the French chemists combined boric acid with magnesium to similar effect.Full Answer >
Positively charged atomic particles are called protons. These particles, along with neutrons, exist in the nucleus of the atom. Protons and neutrons each have an atomic mass of one.Full Answer >