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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":609518,"subcategory_id":116}}]}; var jPuzzleUserId = puzzle.user_id; var jUserId = ""; var jPuzzleUserPaid = "1"; var puzzleText = "11111111REACTANTS1111111111111111Q1111111GAS1111111E1COMBUSTION111Q111111C1N11111I111111PLUS11111H1D11111L11111111E111111EXOTHERMIC_REACTION11111M1T1E111B11111111U111111I1H1A1S1R111111F1S11R111C1E1T1I1I11LIQUID1D1E111A1R111N1U1R1111R11E1V111L1M111G1M1U1111E11C1E111_1I111L111S1111W11O1R111R1CONSERVATION_OF_MASS11E1_111_11111111R11P1I111A1R111R11111111K11O1B111C1E1COEFFICIENTS11S1L111T1A111P111111111C1T1E111I1C1SOLID1111111A1I11111O1T111A11COMBINATION1111N1I111C111111111A1N111111DOUBLE_REPLACE1L111111111N1111111111111YIELDS11111111111PRODUCTS11111111111111111111111T111111"; var puzzleStyleText = ""; var clues = {"across":[{"x":9,"y":1,"clue":"Starting substances in a reaction are called ___."},{"x":18,"y":2,"clue":"In a reaction, \"g\" means."},{"x":6,"y":3,"clue":"A___reaction, is when substances react with oxygen, to produce energy in the form of heat & light."},{"x":17,"y":4,"clue":"In a reaction, the + sign means, ___.\n"},{"x":2,"y":6,"clue":"When energy is given off in a reaction, this is an ___."},{"x":13,"y":9,"clue":"In a reaction, \"l\" means ___."},{"x":4,"y":13,"clue":"Energy is neither created nor destroyed."},{"x":6,"y":16,"clue":"# of units, taking part in a reaction are called, ___."},{"x":6,"y":18,"clue":"In a reaction, \"s\" means ___,"},{"x":11,"y":19,"clue":"___reaction is when two or more substances combine to form a new substance."},{"x":3,"y":21,"clue":"When 2 cations change places, & you get 2 new compounds, this is called a ___ment reaction."},{"x":18,"y":22,"clue":"In a reaction, --> means, ___."},{"x":11,"y":23,"clue":"The new substances created in a reaction are called ___."}],"down":[{"x":10,"y":1,"clue":"Forward & reverse reactions occur at equal rates."},{"x":19,"y":2,"clue":"In a reaction, \"aq\" means, ___."},{"x":4,"y":3,"clue":"When energy is absorbed in a reaction, this is called an ___."},{"x":2,"y":4,"clue":"1 or more substances converted into new substance\/s, is called a _____."},{"x":6,"y":6,"clue":"In a reaction, an arrow with a triangle above it, means that __ was added."},{"x":8,"y":8,"clue":"A ___ment reaction, is when two metals change places and you get \"one\" new compound."},{"x":17,"y":8,"clue":"An example of a combustion reaction, is ___."},{"x":22,"y":8,"clue":"____Reactions, occur in forward and backward directions."},{"x":20,"y":9,"clue":"___reaction is when one substance breaks down into two or more substances."},{"x":12,"y":10,"clue":"A common reaction in South Texas is ___."},{"x":18,"y":17,"clue":"___, speeds up a chemical reaction"}]} var rebuses = {}; var puzzlePublished = 1; var puzzleDimension = 24; 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.'); } } -->