Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

A change is called irreversible if it cannot be changed back again. Many chemical reactions are irreversible. In a chemical reaction, new materials are always formed. Sometimes these new materials ...

Atoms are rearranged during a chemical reaction, but the number of atoms does not change. Evidence of chemical reactions includes a large temperature change, bubbles, or a colour change.

Some chemical reactions change temperature, change color, produce a gas, or make a solid from two liquids. Try this reaction and see what it does! Pour 1 tablespoon of hydrogen peroxide into a cup.

Scientists at Oak Ridge National Laboratory have developed a method that can track chemical changes in molten salt in real time ... the scientists used argon gas (which alone doesn't cause a reaction) ...

The ancient reactions Suess is investigating rely on specialized enzymes with clusters of metal atoms. These could provide the key to developing new methods that can extract vast amounts of carbon ...

Computer simulations are an increasingly crucial part of any chemical scientist’s toolkit ... the coordinate system that best characterizes the structural changes over the course of the reaction. The ...

Electrochemistry is a discipline that deals with chemical reactions that involve an exchange of electric charges between two substances. Both chemical changes generating electric currents and ...