What are physical combinations of different pure substances that can be separated into their original components by physical means? a. mixtures b. elements c. molecules d. compounds

Ihat will happen if i added baking soda to vinegar

What are transitions between a liquid and a solid called? identify which way they are transitioning

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?