Covid Tests

Coronavirus disease (COVID-19) testing is probably something you’ve heard a lot about. Contact your health care physician or your local health departmentExternal Link Disclaimer very away if you suspect you have COVID-19 and require a test. You may also look for a community testing location in your area or purchaseRead More →

Alkaline Earth Metals

Dmitri Mendeleev, a Russian chemist, presented his first effort at categorising chemical elements according to their atomic weights in the late 1800s. Mendeleev noticed that when the elements were grouped by weight, some sorts of elements appeared in regular intervals, or periods. Today, scientists officially acknowledge 118 elements (with theRead More →