Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Methods Of Balancing Chemical Reactions: Balancing chemical equations is an important part of writing chemical reactions accurately. It ensures that the law of conservation of mass is maintained, ...

Every chemical reaction involves a change in energy because different substances hold different amounts of energy. During the reaction, bonds inside the substances that are reacting together must be ...

Purifying mixtures without using heat would lower global energy use, emissions and pollution — and open up new routes to resources, say David S. Sholl and Ryan P. Lively. You have full access to this ...

A colour change might take place when two substances react. It can also happen when a compound is broken down by heating it. This is called thermal decomposition. Watch this video to see how the ...

Researchers are suggesting seven energy-intensive separation processes they believe should be the top targets for research into low-energy purification technologies. Beyond cutting energy use, ...