Out of the following, which has the least amount of mass? a) protons b) none of the above c) electrons d) neutrons

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

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

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption