Question

. Never start a job without knowing the ___________ and ______________ of the chemicals you are working with.

Answer 1

location,types that is your answer for this one hope i helped

Answer 2

Step-by-step explanation:

the blanks will be properties and hazard

Working on chemicals can be a dangerous job so before working on chemicals we should have all the knowledge of the chemicals properties.

And also while working on the chemical you should also have the knowledge of the hazard caused by the chemicals.