An element has atomic number 10 and an atomic mass of 20. how many neutrons are in the atom of this element?

a.10
b. 20
c.30
d. 0
e. 200

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves

What happens to the temperature of a substance when the average kinetic energy of its particles increases?