Researchers at the University of Illinois Urbana-Champaign have developed a new theoretical framework that could dramatically ...

I have always been struck by the way a single scientific insight can redraw the boundaries of power, turning abstract ...

Chemical and mineral sunscreens shield your skin from the harmful effects of the sun’s UV rays in very different ways. “Mineral sunscreen ingredients, zinc oxide and titanium dioxide, are small ...

The processes like crystallisation, boiling, vaporisation, burning of colour, melting point, hardness etc, are called physical changes. These are reversible in nature. The processes like ...

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, ...

“THE inability to balance a chemical equation is a most common difficulty to students of chemistry.” The author has attempted to remedy this very common weakness, and in addition to a concise ...

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 ...

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, ...