True or False Directions: Fill in the blank with True or False. If the statement is false, change it to make the state-
ment true. Rewrite the true statement in the space provided.
5.
Nuclear changes occur when electrons move from atom to atom.
6.
Ionic bonds occur when the electrons of one atom merge with the electrons of another atom.
7.
When electrons are shared between atoms, they form covalent bonds, or molecules.
8.
A chemical reaction only occurs when molecules are formed.
9.
Oxidation-reduction, or redox reactions, occur when molecules merge.

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.