Can someone tell me what is an ore?

How does the viscosity of magma change as magma cools?

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule

Which of the following describes the entropy change as a solution is made from a liquid and solid