When elements combine or join together new substances are formed. These substances are called compounds. This is shown in the diagram below There are millions of different compounds and all of ...
Groups in the periodic table - AQA Elements in the same group of the periodic table show trends ... form coloured compounds and act as catalysts. Sample exam questions - atomic structure and ...
11don MSN
Collagen, the body's most abundant protein, has long been viewed as a predictable structural component of tissues. However, a ...
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