Sugar and salt crystals are made of entirely different elements and have very different chemical and physical properties. While both dissolve readily in water, they dissolve in different ways, and unlike sugar, the dissolution of salt is largely unaffected by temperature. Their greatest similarities are in their common appearance as small white crystals and their use in the preparation and flavoring of food.Continue Reading
The sugar most often used by humans is sucrose. This covalent compound is most often derived from sugar beets or sugar cane. It is composed entirely of covalently bonded carbon, oxygen and hydrogen atoms. The bond between oxygen and either carbon or hydrogen is very polar, and the configuration of the sucrose molecule makes it polar overall. It is this polar nature that allows sugar to dissolve readily in water, with its solubility increasing at higher temperatures.
The salt most commonly encountered by humans is sodium chloride. Sodium chloride crystals are not made of individual molecules; they are composed of a crystalline lattice of sodium and chloride ions. Each sodium ion is ionically bonded – that is, held together with opposite charges – to each of the chloride ions around it. When salt dissolves, the water is pulling individual ions into solution rather than whole molecules, as is the case with sugar.Learn more about Chemistry
Some recipes for growing crystals include mixing three tablespoons of borax with a cup of boiling water or mixing equal parts Epsom salt and hot tap water. Salt crystal geode recipes call for only hot water, salt and an eggshell, while recipes that mix copper sulfate and hot water produce crystals that are vivid blue in color.Full Answer >
Some of the atomic chemical properties of the element zinc include a nonbonded atomic radius of 2.01 and covalent radius of 1.20; an unstable electron affinity and electronegativity of 1.65 based on the Pauling scale; and its first eight increasing ionization energies listed at 906.402, 1733.3, 3832.687, 5731.2, 7969.7, 10420, 12929 and 16788 kJ mol-1. Zinc is a transition metallic element.Full Answer >
Examples of chemical properties include toxicity, flammability and chemical stability. Measuring these properties involves observing their effects on laboratory animals, testing with a flame or observing changes over time. In each instance, a chemical change occurs.Full Answer >
Baking soda, otherwise known as sodium bicarbonate, has the chemical properties of not being flammable, being easily decomposed by acids, starting to decompose in water solution at approximately 20 degrees Celsius and an increasing alkalinity in solution as it is heated or stirred. Baking soda is used for cleaning and cooking and is effective at putting out certain types of fires.Full Answer >