Because substances are made up of different atoms and molecules, they react in characteristic ways. Production of a gas, color changes, a change in temperature, and the formation of a precipitate are ...

When chemists design new chemical reactions, one useful piece of information involves the reaction's transition state—the ...

Chemical reactions make new chemicals. Atoms are rearranged during a chemical reaction, but the number of atoms does not change. Evidence of chemical reactions includes a large temperature change ...

to the indicator and see that the two solids cause different color changes. Students recognize that a particular color change is a characteristic property of a substance and that a color change can ...

When chemists design new chemical reactions, one useful piece of information involves the reaction's transition state - the ...

These special substances speed up chemical reactions without getting used up themselves ... This approach is completely different from traditional methods. Usually, scientists study millions of ...

“At low temperatures, models of reactivity must include the effects of the permanent electric dipoles and quadrupole moments ...

Chemical reactions are like a journey between starting materials ... Although heterogeneous catalysts are stable and ...