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 ...

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 ...

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.

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.

A chemical reaction that's vital to a range of commercial and industrial goods may soon be initiated more effectively and less expensively.

The Chem-E-Car competition races cars which are only powered by chemical reactions. The goal is to come up with an elegant solution – you can’t simply jettison matter out the back as the ...

The Change Reaction direct-giving foundation has launched an emergency relief fund in response to the devastating wildfires impacting Los Angeles County with an initial gift of $10 million ...

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 ...

Scientists at Oak Ridge National Laboratory have developed a method that can track chemical changes in molten salt ... gas (which alone doesn't cause a reaction) to send two isotopes of hydrogen ...