Chlorides of group || cations contain (Cadmium chloride, Mercuric chloride, Copper chloride and Bismuth chloride). 1- Mercuric chloride HgCl2:- It's poisonous odorless white crystalline solid, very toxic compound, and it's slightly volatile at ordinary temperatures. Parent acid and base: Hydrochloric acid HCl + Hg(OH) 2 Uses:- *Antiseptic and disinfectant in insecticides, preservatives, and batteries. *Antibacterial. * Obsolete substance.
I. INTRODUCTION This report discusses an experiment, the objective of which was to determine the classification of six known chemicals: sodium nitrate, barium chloride, silicon carbide, naphthalene, urea, and antimony and two unknown chemicals XIa and XIb. Since each type of chemical (ionic, molecular, macromolecular and metallic) has its own set of properties, by testing these properties and finding them out for each chemical, it was possible to classify them. The properties tested during this experiment were solubility in water, toluene, and ethanol and the electrical resistance for those soluble in water. The melting point was tested for the two unknown chemicals.
The formula for sodium acetate is NaC2H3O2, it is quite soluble in water, soluble in ether and slightly soluble in ethyl alcohol. While the chemical compound melts at 622.8℉, it does not have a boiling point for it will decompose. A hydrate is a chemical compound that forms when one or more water molecules are added to the molecules of another substance. Since sodium acetate is a trihydrate (NaC2H3O2·3H2O), it has three molecules of water for every molecule of sodium acetate and because of this, anhydrous sodium acetate quickly transitions into a trihydrate. This is due to sodium acetate being quite hygroscopic, meaning it readily absorbs moisture from the air.
Sodium carbonate (molecular formula: Na2CO3), is the water soluble sodium salt of carbonate. The pure product appears as a while, odorless powder with a strong alkaline taste. It has high hygroscopicity. It can be easily dissolved in water to form an aqueous solution with moderate alkalinity Sodium bicarbonate (IUPAC name: sodium hydrogen carbonate) is chemical compound with the formula NaHCO3. It is a salt composed of sodium ions and bicarbonate ions.
Isotopes are atoms that contain the same number of protons but have different numbers of neutrons (What is Isotope). These isotopes contain similar chemical properties but have different physical properties due to their atomic mass. Or in other words, isotopes have the same atomic number but differ in mass (What is an Isotope). “There are 90 naturally occurring elements with roughly 250 stable isotopes, and over 3200 unstable or radioactive isotopes” (Why are Isotopes Important). A stable isotope is an isotope that has a stable nucleus and does not give out radiation while an unstable isotope or also known as a radioactive isotope is an isotope that contains an unstable nucleus and gives out radiation (Isotope Stability).
The molecular formula of cytosine C4H5N30. It has ring arrangements that is connected o the same atoms that are very stable. In addition, cytosine is attached to amine group in position 4 and keto at position 2, via a B-N glyosidic bond. In the same way, nitrogenous base, meaning a nitrogen-containing base. So this family contains of Nitrogen as a constituent unit, and being an organic compound, it has carbon.
Carbon-14 Carbon-14,6-14-C, or radiocarbon, is a radioactive isotope of carbon with a nucleus that has 6 protons as every carbon atom in the universe but has 8 neutrons and outside it has 6 electrons normally because it can lose or gain electrons due to ionic or covalent bonding. (Protons don’t change in an atom because that would transform the element). Carbon-14 was discovered on the 27 of February of 1940 by Martin Kamen and Sam Ruben at the University of California Radiation Laboratory. And Franz Kurie had already suggested its existence in 1934. It is also very rare due to the fact that there is only one carbon 14 atom for every 3 billion carbon atoms in existence.
Halogens are group 17. Halogens are highly reactive in elemental form. Even though this group only needs one electron in its outer level, it has seven electrons. When halogens are in gas form they are diatomic molecules. Diatomic molecules are two atoms in the same covalent bonds.