if you are either a tutor for chem or you're just really good at it please HMU, I need help on 2 exams I need to makeup tomorrow for chem

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

What is the independent variable in this investigation? mass volume sample number substance density