Which two subatomic particles are located within the nucleus of an atom? .
a. protons and neutrons.
b. protons and electrons.
c. electrons and neutrons.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c. vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false