When NASA launched a spacecraft to an asteroid, scientists patiently waited for their chance to look at bits of the space ...

Neutralisation reactions Acids and alkalis react together in neutralisation reactions which produce salts and water. The salt name can be found from the name of the acid and alkali. Reactions of ...

This allows amino acids to be grouped according to the chemical properties of their side chains. For example, some amino acids have polar side chains that are soluble in water; examples include ...

That’s why, in certain situations, people may take arginine supplements to meet their bodies’ needs. Additionally, certain amino acids ... of serotonin, a chemical that acts as a ...

For example, cell receptor proteins contain different amino acid sequences at their binding sites, which receive chemical signals from outside the cell, but they are more similar in amino acid ...

Iron and aluminium are extracted from their ores in various ways. Acids, alkalis and salts ... Sample exam questions - chemical changes - AQA Understanding how to approach exam questions helps ...