How is the decomposing of water a chemical change?

Is melting an ice cube on your hand a chemical or physical and why? Need reasons!

A hydrate is determined to be 45.43% water and 54.57% CoCl. Find the chemical formula and name for this hydrate. (*Hint - assume that there is 100 g total of hydrate compound.)

What type of energy is a ball on the top of a hill

What property of carbon gives it the ability to form many different biological macromolecules, and why is this so important to life?

What causes geologic events such as earthquakes, volcanic eruptions, and the creation of mountains?

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.

Which equation obeys the law of conservation of mass? A. 2Fe+3O2 - -> 2Fe2O3 B. 4Fe+O2--> 2Fe2O3 C. Fe+O2--> Fe2O2 D. 4Fe+3O2--> 2Fe2O3

Why do airbags fill evenly with gases?

In which of the following reactions will Kc = Kp? In which of the following reactions will Kc = Kp? (A) SO3 (g) + NO (g) ↔ SO2 (g) + NO2 (g) (B) 2 N2 (g) + O2 (g) ↔ 2 N2O (g) (C) 4 NH3 (g) + 3 O2 (g) ↔ 2 N2 (g) + 6 H2O (g) (D) 2 SO2 (g) + O2 (g) ↔ 2