Chemistry Terms Crossword Puzzle

QUESTIONS LIST: endothermic : a reaction that takes in energy, sour : how do acids taste?, reactant : a starting substance in a reaction, hydrogen : the element that all acids contain, combustion : burning a fuel in oxygen, product : a substance that is made in a reaction, period : the horizontal row on the periodic table, exothermic : a reaction that gives out energy, group : the vertical column on the periodic table, indicator : a substance that changes colour to show whether a solution is acidic or alkaline, oxidation : reaction of other elements with oxygen, decomposition : a chemical reaction in which a compound breaks down into one or more elements and/or new compounds, neutral : has a ph of 7, universal indicator : gives a range of colours that show how strong the acid or alkali is, ph scale : a number scale from 0 to 14. it tells us how acidic or alkaline a solution is, chemical reaction : a change in which atoms are rearranged and join together differently to make new substances, corrosive : can burn your skin and eyes, alkali : a substance with a ph above 7, acid : a substance with a ph below 7, catalyst : something that speeds up a chemical reaction without being used up, soapy : how do most alkalis feel?