pyramids of numbers and acid alkalis 0.0 / 5 ? ScienceAll LevelsAll boards Created by: natalieCreated on: 19-05-13 13:02 what are pyramids of numbers diagrams that show the population of organisms in a food chain 1 of 5 what do ph values tell us? if they are acid, neutral or alkali 2 of 5 what does the universal indicator do depending on the ph of the substance? it changes colour 3 of 5 what does acid+alkali equal? neutral chemicals 4 of 5 what do other types of chemical reactions produce of gas? heat or bubbles 5 of 5
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