Which property of water is likely the most significant in waters role as a universal solvent
a. water molecules have covalent bonds
b. water molecules have positive and negative sides
c. water contains oxygen atoms
d. water can exist in 3 states of matter?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate

Which scientist was the first to propose the heliocentric model of the universe? a. aristotle b. isaac newton c. galileo galilei d. nicolaus copernicus