Which physical changes are endothermic?

(1) melting and freezing

(2) melting and evaporating

(3) condensation and sublimation

(4) condensation and deposition

A reaction mixture is at equilibrium. What happens when the amount of one of the reactants is increased? The equilibrium state is lost and cannot be restored. The amount of the other reactant also increases. The amount of the product also increases.

What are some catchy projects titles for the question, "What liquids cause the most tooth decay?"

What is an ionic bond? How is an ionic bond done?

Surface currents are mainly caused by prevailing winds. What is the best synonym for "prevailing?"

Scientists learn about the universe by studying the light that comes to Earth from stars and other objects in space. If you were a scientist hoping to understand the universe, what three questions would you ask?

Elastic energy is stored when an object is stretched. Is this an example of potential or kinetic energy? A. Neither B. Both d C. Kinetic O D. Potential Reset Selection

Round each figure to three significant figures

How long does it take earth to complete one rotation

What are the relative numbers of h3o + and oh - ions in an acidic and alkaline and a neutral solution?

Chloroform was used as an anesthetic for childbirth and surgery during the nineteenth century. Write the molecular formula of chloroform.