Water molecules have covalent bonds. Each molecule consists of two hydrogen and oxygen covalent bonds. However, when water molecules are placed together, as they are normally, the hydrogen atoms in each molecule can form hydrogen bonds with the oxygen atom of other molecules.Continue Reading
Hydrogen and oxygen atoms have different electronegativity values, which is the strength that they attract electrons with. This leads to dipole bonds where the hydrogen atoms are slightly positive, and the oxygen atom is slightly negative.
While a hydrogen bond may be called a bond by name, it is not an actual bond. However, it is a stronger interaction between hydrogen atoms and oxygen atoms of different molecules.Learn more about Chemistry
Water molecules break bonds and insert themselves between sugar molecules, causing sugar cubes to dissolve in water. The positively charged oxygen ions in water combine with the negatively charged hydroxyl groups in sugar, forming a hydration shell around the sugar molecule.Full Answer >
Alcohols, such as ethanol and methanol, evaporate at a rate similar to other compounds of their type, but water evaporates comparatively slowly because of its strong bonds. Water molecules easily form hydrogen bonds with one another, which creates a tangled network of attraction within the liquid.Full Answer >
Magnesium has a very energetic combustion reaction with oxygen, where two atoms of magnesium bond with one molecule of oxygen gas to form two molecules of magnesium oxide. This reaction is extremely exothermic, releasing a great deal of heat and light, which is why magnesium fuses are used to initiate reactions such as the thermite reaction, and magnesium is used in flares for high visibility. The reaction of magnesium to oxygen is so energetically favorable that burning magnesium can steal the oxygen from both water and carbon dioxide, making these common methods of dousing flames ineffective to stop magnesium combustion.Full Answer >
Salt crystals are formed when sodium and chlorine bond together via a shared electron and these sodium and chlorine molecules bond with other sodium and chlorine molecules. Water dissolves the connection between the sodium and chlorine atoms, but when the water evaporates, the connection can re-establish itself.Full Answer >