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With its earliest ideas coming to us from Ancient Greece, Chemistry has a long and interesting global history. Help your students learn about Chemistry--from the ideas of Epicurius and Lavosier and modern Nobel Prize winners--with chemistry crossword puzzles. These chemistry activities for students are great tools to help your class memorize important scientific concepts and vocabulary and learn about the periodic table, molecules, atoms, and ions. Our Chem crossword puzzles include topics such as: chemical reactions, chemical bonds, atomic structure, and even lab safety worksheets. You can use these chemistry puzzles for a variety of science classroom assignments. View all science crosswords<\/a> to see puzzles in every subject. You can also make your own Chemistry worksheet using our easy-to-use sites, linked below. <\/p>","active_flg":1,"slug":"Chemistry","title_tag":"Chemistry Crossword Puzzles | My Crossword Maker","h1_tag":"Print Free Chemistry Crossword Puzzles","meta_keywords":"null","meta_description":"These Chemistry crossword puzzles were created using My Crossword Maker, the easiest way to create your own crossword puzzle.","pivot":{"puzzle_id":1003724,"subcategory_id":116}}]}; var jPuzzleUserId = puzzle.user_id; var jUserId = ""; var jPuzzleUserPaid = "1"; var puzzleText = "11111111111111111111111111111111111111E1111111111E111S1111111X11111F1111N111U1111111O11111R1111D111B1111111T11111E1111O111S1111111H11111E1111T111C1111111E11111Z1111H111R1111111R11111I1111E111I1111111M11111N1111R111P1111111I11111G11CUMBUSTION_REACTION1_1111I11111111111_11111P11DECOMPOSITION_REACTION111_11111111111E11111I111PRODUCT111111A11111N1111E11111111111C11111T1CATALYST1111111T1111111111C11111111111I1111111111T11111111111O11111111BOILING_POINT1N1111111111O11111111111111111111SYNTHESIS_REACTION111111111111111111111111111"; var puzzleStyleText = ""; var clues = {"across":[{"x":2,"y":11,"clue":"a reaction of a substance with oxygen to give heat and light"},{"x":2,"y":13,"clue":"AB ---> A + B ; a reaction in which a single compound breaks down to form two or more simpler substances"},{"x":3,"y":15,"clue":"substances produced in a chemical reaction"},{"x":1,"y":17,"clue":"substance that initiates or accelerates a chemical reaction"},{"x":2,"y":20,"clue":"the temperature at which a liquid boils at sea level"},{"x":2,"y":22,"clue":"A + B ----> AB, a reaction in which two or more substances combine to form a new compound"}],"down":[{"x":16,"y":2,"clue":"a chemical reaction accompanied by the evolution of heat"},{"x":4,"y":3,"clue":"a chemical reaction accompanied by the absorption of heat"},{"x":8,"y":3,"clue":"number which tells how many atoms of an element are in a molecule or compound; written on or below the line; not changed in balancing an equation"},{"x":22,"y":3,"clue":"the temperature below which a liquid turns into a solid"}]} var rebuses = {}; var puzzlePublished = 1; var puzzleDimension = 23; var userHasAnswers = false; var correctAnswerArray = new Array(); var currentAnswerArray = new Array(); var currentPuzzleString = ''; var activeCell = null; var acrossBinary = true; var gridEdited = 0; var runningStringList = new Array(); var undoSpot = 0; var startTime = Math.round(new Date().getTime() / 1000); var alreadyTime = 0; var completeText = new Object(); var errorRed = false; var simpleFlag = "1"; var solvedAlreadyShown = 0; var puzzleFilledAlertShown = 0; var mostRecentSignup = ''; var deviceType = $.ua.device.type; var attemptProgress = ''; var pdfAnswers = ""; if(!automated) { if(!$.isEmptyObject(rebuses)) { honk.alert('Online solving is not supported for this puzzle since it contains a rebus.'); } } -->