When water changes state from solid to liquid to gas, ALL BUT one thing happens. There is no A) chemical change.
B) physical change.
C) addition of energy.
D) increase in temperature.

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

Write a balanced equation showing the formation of copper (ii) nitrite from its elements

Which substance can be broken down by chemical means