Chapter 21 Science VOCAB Crossword
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
 
 
Down: 1) a type of chemical reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light2) substance that speeds up a chemical reaction without being permanently changed itself3) the gain of electrons by the atoms of a substance4)  chemical reaction in which one substance breaks down into two or more substances5) substance that slows down a chemical reaction or prevents it from occurring by combining with a reactant8) shorthand method to describe chemical reactions using chemical formulas and other symbols9) chemical reaction that requires energy input (heat, light, or electricity) in order to proceed10) process in which one or more substances are changed into new substances13) chemical reaction in which energy is primarily given off in the form of heat16) in a chemical reaction, the substance that reacts19) in a chemical reaction, the new substance that is formed Across: 6) chemical reaction that releases some form of energy, such as light or heat7) a chemical equation with the same number of atoms of each element on both sides of the equation11) chemical reaction that produces a precipitate, water, or a gas when two ionic compounds in solution are combined12) chemical reaction in which two or more substances combine to form a different substance14) number in a chemical equation that represents the number of units of each substance taking part in a chemical reactions15) chemical reaction that requires heat energy in order to proceed17) insoluble compound that comes out of solution during a double displacement reaction18) chemical reaction in which one element replaces another element in an compound20) the loss of electrons from the atoms of a substance
 

 

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