Which process is an example is an example of a physical change? a. water turns to steam when boiled over a Bunsen burner.
b. carbon combines with oxygen to form carbon dioxide gas.
c. water breaks down into hydrogen and oxygen gases over time.
d. Limestone breaks down into lime and carbon dioxide when heated.

What are the 4 phases of matter in order of increasing engery content?

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.