Identify the independent, dependent, and control variable in the following paragraphs.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

How many molecules are in 6.0 moles of methane

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.