What is the most difficult part of a controlled experiment?
1.)testing only one variable
2.)testing two variables
3.)testing multiple variables
4.)testing zero variables

the real answer is b. scintillation counter

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;