Science Crossword

3. A chemical reaction in one element in a compound is replaced by another element
6. The state that occurs when forward and reverse reactions each happen at the same rate
9. A loss of electrons in a chemical reaction
14. A chemical reaction in which two or more reactants combine into a single, more complex product
17. A combination of chemical formulas and symbols that models a chemical reaction
18. A number placed in front of a chemical formula within a chemical equation that shows how many units of reactants or products are needed to balance the chemical equation
19. A gain of electrons in a chemical reaction
24. The model that states that for a reaction to occur, the reactant particles must collide with each other, with the proper alignment, and with enough energy
25. The molar of one mole of a substance

1. A reaction in which the products can react together to re-form the original reactants
2. A chemical reaction in which a single reactant breaks down into two or more products
4. The principle that states that a chemical system in equilibrium will adjust its equilibrium position in such a way as to reduce the effect of any changes made it to the system
5. The law that states that energy can not be created or destroyed but only transferred between objects or transformed
7. A chemical reaction that absorbs more thermal energy than it releases
8. The minimum energy needed for a chemical reaction to occur
10. A chemical reaction that releases more thermal energy than it absorbs
11. An exothermic chemical reaction in which a fuel reacts with oxygen
12. A chemical reaction in which two compounds swap cations or anions with each other
13. A process that changes a substance into one or more different substances
15. The speed of a reaction
16. A substance that slows the rate of a reaction by reducing the effectiveness of Catalyst
20. A substance that enters into a chemical reaction
21. A substance that helps a reaction happen faster but is not used in the reaction
22. A substance that is formed during a chemical reaction
23. S.I. fundamental unit for the quantity of matter in a substance