Dms chemistry Crossword
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
                        
 
 
Down: 1) two or more substances that come together but do not chemically combine2) a reaction that releases heat energy3) amount of substance present in a certain volume4) the number of protons plus the number of neutrons6) an element in group 17 of the periodic table that has 7 valence electrons7) slows down a chemical reaction8) substance that exists before a chemical reaction begins11) a column of the periodic table that has elements with similar properties14) a substance that speeds up a chemical reaction without being destroyed Across: 5) the ability of electrons to pass through a substance9) a reaction that absorbs heat energy10) the ability of a metal to be pounded into flat12) anything substance has mass and volume13) number that tells how many atoms of each element make up a compound14) a substance that is made of more than one element chemically combined15) positively charged particle that is the same as the atomic number16) substance that forms as a result of a chemical reaction17) shorthand form to represent which elements make up a compound18) a substance made of only one type of atom
 

 

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