1 FACT: Protection against whooping cough from early childhood vaccines may wear off, leaving adults and adolescents at risk for infection.  FACT: In China, whooping cough is known as the âcough of 100 daysâ due to the prolonged, dry cough that is experienced by infected individuals.
Which compound contains ionic bonds 1. CaO because Ca is a metal and O is a gas and all the other possibillities are gasses combined and ionic has a metal and gas combination if you look at the periodic table of el â¦ ements the right side is gases but they are determined by like a staircase and the rest are metals.
Answers: 1. Determine if the following compounds are likely to have ionic or covalent bonds. a. magnesium oxide, MgO ionic (metal and nonmetal) b. Strontium chloride, SrCl2 ionic (metal and nonmetal) c.Ozone, O3 covalent d. Methanol, CH4O covalent (C and O are nonmetals and H is a metal) *a metal bonded with a nonmetal forms an ionic bond; also, when an element is bonded to itself it forms a covalent bond 2.nswers: 1. Determine if the following compounds are likely to have ionic or covalent bonds. a. magnesium oxide, MgO ionic (metal and nonmetal) b. Strontium chloride, SrCl2 ionic (metal and nonmetal) c.