Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:
mg+2
,
pb+4
,
i−
,
o−2

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

All of the following are part of the biosphere except

What produces wave a)sound b) heats c)transfer of energy d)vibrations