how can two substances be made up of the same two elements but have very different properties?

Which feature indicates that mars resides in the inner region of the solar system

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

Acar travels 40m in 8 seconds find the car speed