For testing, many of our schools don't have the equipment but there are other great alternatives. This is really why we need to carry out more than one test on the unknown substance because some categories of compounds share similar properties for example, ionic compounds and covalent compounds both have high melting points.
From this information students will analyze their results to determine whether the compounds or mixtures are covalent or molecular compounds.
If all the groups don't do enough quality tests for determining covalent and ionic compounds, have them fill in their data in an excel worksheet for all to view on the projector.
The periodic table can help us recognize many of the compounds that are ionic: When a metal is combined with one or more nonmetals, the compound is usually ionic.
Look at the containers of: sodium chloride, potassium iodide, sucrose, benzoic acid, camphor, sodium nitrate, tap water, distilled water, 3M Hydrochloric acid and paint thinner.
NOTE: make room for an extra column at the right side for "further studies". Welcome August 16, A warm welcome to all new and returning students and families for the school year! This activity will help students make connections between the two types of compounds with the Periodic Table and will help bridge in to the nomenclature of ionic and molecular compounds.
The main part of this grade will be a rubric for their data tables and their conclusions with questions. Sharon Williams - Athletic Director Ms.
Over of these are new Raptors, and include the return of foreign exchange students with a young man from Sweden Hurrah! Although pure aluminum oxide is colorless, trace amounts of iron and titanium give blue sapphire its characteristic color.
Thus, ionic compounds are electrically neutral overall, even though they contain positive and negative ions. Covalent bonds are the attractive forces between the positively charged nuclei of the bonded atoms and one or more pairs of electrons that are located between the atoms.