Write the balanced equation and identify the type of reaction for the experiments. 1. Holding the copper wire in the hottest part of the flame for a few minutes.

2. Placing a shiny iron nail and adding CuSO4 solution so half the nail is covered then leaving it there for 15 mins before removing the nail.

3. Having a small amount of CuSO4.5H2O in a test tube and holding it over a flame.

4. Wait until the test tube from question 3 is cooled and than add 2-3 drops of distilled water.

5. 1. Put 10 drops of CaCl2 solution into a test tube.
2. Put 10 drops of Na2CO3 into another test tube.
3. Pour CaCl2 solution into Na2CO3 test tube.

6. Put a piece of mossy zinc in a test tube and than fill the test tube with HCl (aq) until it covers the mossy zinc.

7. Fill a test tube 1/3 with H202 solution, add a bit of Kl (s) and than test the gas involved bt placing a splint into the test tube.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.