The element potassium is found in the fourth. of the periodic table what does that tell you about an atom of potassium

Which type of reaction always has an element and a compound as reactants

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.