Under what conditions can potassium bromide, an ionic compound, conduct electricity? a
when melted or dissolved in water
b
only when it is in crystal form
c
only when melted
d
only when it is dissolved

Which material produces static charge when rubbed ?

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?