When suspended energy converts to energy in motion, we call this conversion . Energy stored in bonds between atoms is called potential energy. While in storage, the energy is potential energy. As the bonds break and the energy is transferred, it is called chemical energy. The amount of energy available for transfer is called energy. We can calculate the amount of energy available using the Free Energy Equation. This amount of energy is constant and does not change for a given reaction under set conditions. Some energy is lost to the environment during energy transfers. This unavailable energy increases as it is released.

Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Summarize possible ways in which phases of matter could combine to form a solution.