D. A mixture
If the water is evaporating while the salt remains, it means the two are not chemically bonded and therefore are not a compound.
A. Oxygen. Oxygen has an atomic mass of 16. The atomic mass of an atom is the combined weight o the protons and neutrons. Since Oxygen's atomic mass is 16, it has 8 protons and 8 neutrons.
Answer:
C
Explanation:
You climbing the water slide gives you potential energy and your building gravitational eneergy.
B) the number of electrons
Answer: the process by which cells use oxygen to break down sugar and obtain energy.
