Which statement correctly describes what happens when water turns to steam in terms of energy? a. the water absorbs energy which causes chemical bonds to break, changing water to steam. b. the water releases energy which causes chimical bonds to break, changing water to steam. c. the water absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a liquid to a gas. d. the water absorbs energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from a liquid to a gas.

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.

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?