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?