They form coloured compounds and act as catalysts. Sample exam questions - atomic structure and the periodic table - AQA Understanding how to approach exam questions helps to boost exam performance.

often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic ...

Why is knowing the atomic structure of molecules useful? Learn why, and how information like this about protein structure is shared through a publicly available database. Scientists use a variety ...

Sample exam questions - atomic structure and the periodic table - AQA Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice ...