The ==Key Stage 3=====Meaning==='''Citric Acid''' is the [[acid]] found in [[citrus]] [[fruit|fruits]] ([[lemons]], [[limes]], [[oranges]], [[grapefruit]]). ===References=======AQA==== :[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Citric acid, pages 143, 148, 152, GCSE Chemistry; Student Book, Collins, AQA '']