Across
- 5. any instance in which electrons are lost
- 9. The speed of a reaction
- 12. substances that reactiants combine to produce
- 14. one in which a single reactant breaks down into two or more products
- 15. a substance, usually called a fuel, reacts with oxygen
- 17. The mass of one mole of a substance
- 18. slow the rate of a reaction by reducing the effectiveness of catalysts
- 21. the forward and reverse reactions each happen at the same rate
- 22. Reactions that release this energy as heat
- 23. combine two or more reactants into a single, more complex product
- 24. any chemical system in equilibrium will adjust its equilibrium state in such a way as to reduce the effect of any changes made to the system.
- 25. one element in a compound is replaced by another element
Down
- 1. we need three things to happen before reactants will react
- 2. A reaction that absorbs more energy than it releases
- 3. a combination of chemical formulas and symbols that models a chemical reaction.
- 4. two compounds swap cations or anions with each other
- 6. the products can react together to re-form the original reactants
- 7. The energy needed to get a chemical reaction started
- 8. substances that enter into a chemical reaction
- 10. during a chemical reaction no energy is created or destroyed, but only changed from one form to another
- 11. a process that changes a substance into one or more different substances.
- 13. The number placed in front of a chemical formula within a chemical equation
- 16. a substance that helps a reaction happen faster but is not used up in the reaction
- 19. a defined quantity of items.
- 20. the element that gains electrons and is thus reduced