This table shows covalent compounds being investigated by five scientists. Each scientist wants to give a chemical name to the compound.

Which scientist(s) incorrectly named her compound? Check all that apply.

A)Adele
B)Ethel
C)Kate
D)Audrey

An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost