Quinoa is a complete protein, meaning that it contains all nine essential amino acids that our bodies cannot make on their own.

EdexcelOCRAQA Enter your text here ... Enter your text here ... Enter your text here ... Amino acid  Molecule A. This is glycine - the simplest of the amino acids. The systematic name is  2- aminoethanoic acid  Amine Molecule B. This is a simple aliphatic amine with two carbon atoms called ethylamine ( or ethanamine) ....

1.40 draw dot-and-cross diagrams to show the formation of ionic compounds by electrontransfer, limited to combinations of elements from Groups 1, 2, 3 and 5, 6, 7only outer electrons need be shown1.41 understand ionic bonding in terms of electrostatic attractions1.42 understand why compounds with giant ionic lattices have high melting and boilingpo...

Intro image Edexcel 1Edexcel 2OCR Enter your text here ...  Exothermic reactions always lead to an increase in entropy of the surroundings.  In an example like this - the burning of magnesium  in oxygen - the entropy of the system decreases  because a giant ionic lattice ( Magnesium Oxide) is formed from the magnesium metal...

 CONGRATULATIONS ..on a brilliant set of exam results. 2021 has, for obvious reasons been one of the most difficult years for A level students. You've all persevered, given your best and thoroughly deserve success.  What students and parents have said: "I fully recommend Goldhill Education" I wouldn't hesitate to fully recommend...

 Assumed prior knowledge The Reactivity Series Rust forms on iron and steel as a result of a redox reaction between iron and oxygen.  2.15 - 2.20 Loss and gain Oxidation and redu... https://www.mychem.co.uk/index.php/igcse-chemistry/inorganic-chemistry/reactivity-series OCR Enter your text here ... EDEXCEL AQA Enter your text here ... Oxi...