What are three common materials that were developed by scientists

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What is an example of a physical property?