Students then run the same dissolving test on substances A, B, and C; identify the salt and sugar; and conclude that the other substance must be something different. Students then see an animation to ...

The number of different molecules grows exponentially with the number of synthesis cycles and with the number of different building blocks that are combined in each synthesis cycle.

Note: Comparing the amount of temperature change for different substances by dissolving the same mass of each substance in the same amount of water is fine at the middle school level. However, a more ...

Drugs and explosive chemicals are difficult to detect, but a device more sensitive than a dog’s nose can pick up their traces ...

Many biologically important molecules change shape when stimulated by UV radiation. Although this property can also be found in some drugs, it is not yet well understood. Using an innovative ...

Billions of new molecules in just a few weeks The bottleneck in the development of new molecular therapies is the limited number of new active substances that can be found using current techniques. A ...

Neurodegenerative diseases like Parkinson’s and Alzheimer’s affect millions of people and are becoming more common as the ...

Free radicals are unstable atoms that can cause damage to cells. Learn how they affect the body and how antioxidants may help here.

With the help of the world's most powerful X-ray laser, a research team has achieved an important breakthrough: Using the example of the pharmaceutically active substance 2-thiouracil, they ...

Chemists find new pharmaceutically active substances from billions of newly combined molecules by Daniel Meierhans, ETH Zurich Editors' notes Credit: Unsplash/CC0 Public Domain ...