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Across 6. OXIDATION REACTION OF AN ORGANIC COMPOUND IN WHICH HEAT IS RELEASED. GAS BURNING IN CAR ENGINE (2 Words) 9. PROTEINS THAT ARE CATALYSTS IN LIVING ORGANISMS 10. SUBSTANCE OR MOLECULE THAT PARTICIPATES IN A CHEMICAL REACTION 11. A CHEMICAL EQUATION THAT HAS THE SAME AMOUNT OF ATOMS IN THE REACTANT AS IN THE PRODUCTS. CONSERVATION OF MASS 12. REACTION IN WHICH 1 COMPOUND BREAKS DOWN INTO 2 OR MORE COMPOUNDS (2 Words) 14. SUBSTANCE THAT FORMS IN A CHEMICAL REACTION 19. TYPE OF REACTION WHERE HEAT IS RELEASED TO SURROUNDINGS (2 Words) 21. ANY CHEMICAL CHANGE IN WHICH ONE SPECIES IS OXIDIZED(LOSES ELECTRONS) AND ANOTHER SPECIES IS REDUCED(GAINS ELECTRONS) (2 Words) 23. CATALYSTS THAT SLOW REACTION RATE

Down 1. REACTION IN WHICH A GAS, SOLID PRECIPITATE OR A MOLECULAR COMPOUND FORMS FROM THE EXCHANGE OF ATOMS OR IONS BETWEEN 2 COMPOUNDS (2 Words) 2. WHERE A SUBSTANCE CHANGES TO FORM NEW SUBSTANCES. LIKE BURNING OR DECAYING (2 Words) 3. STATE OF BALANCE IN A CHEMICAL REACTION WHERE THE FORWARD RATE EQUALS THE REVERSE RATE (2 Words) 4. REACTION WHERE ONE ELEMENT TAKES THE PLACE OF ANOTHER ELEMENT IN A COMPOUND (2 Words) 5. THE RELATIVE NUMBER OF MOLES OF A SUBSTANCE REQUIRED TO PRODUCE A GIVEN AMOUNT OF PRODUCT (2 Words) 7. REACTION THAT REQUIRES HEAT OR ENERGY TO RUN (2 Words) 8. REACTION IN WHICH 2 OR MORE SUBSTANCES COMBINE TO FORM NEW COMPOUND (2 Words) 13. USING ELECTRIC CURRENT TO PRODUCE A CHEMICAL REACTION 15. CHEMICLA PROCESS OF GIVING OFF LIGHT FROM A LIVING ORGANISM. FIREFLY 16. REPRESENTATION OF A CHEMICAL REACTION THAT USES SYMBOLS TO SHOW RELATIONSHIPS OF REACTANTS AND PRODUCTS (2 Words) 17. SUBSTANCE THAT CHANGES RATE OF REACTION 18. ORGANIC GROUP THAT HAS ONE OR MOR ELECTRONS AVAILABLE FOR BONDING 20. WHAT IS STORED IN THE CHEMICAL BONDS. IF BONDS BREAK THEY RELEASE THIS ENERGY (2 Words) 22. THE SUBSTANCE OR REACTANT IN THE REACTION THAT IS CATALYZED BY ENZYMES