Label each figure below as a physical or chemical change and explain how you know in complete sentences. Use the indicators of a chemical reaction to support your answer Figure : H 2 O(g) H 2 (g)+O 2 (g) Figure 2: H 2 O(g)**>H 2 O(l)

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.