Chemistry Crossword

2. combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat
3. formation of an insoluble salt when two solutions containing soluble salts are combined.
4. listed in descending order of reactivity.
5. the amount of product resulting from a chemical reaction
15. a substance that enters into and is altered in the course of a chemical reaction.
16. contain two atoms that are chemically bond
18. reactions or processes that release energy
20. number placed in front of symbols or formulas in a chemical equation to indicate their relative amount.
21. a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products
22. Matter occurs in four states: solids, liquids, gases, and plasma

1. a compound breaks down into two or more simpler substances
6. occur when parts of two ionic compounds are exchanged, making two new compounds.
7. a new aqueous compound and a different pure element will be generated as products.
8. a conversion factor that relates the amounts in moles of any two substances in a chemical reaction
9. states that in a chemical reaction mass is neither created nor destroyed.
10. eactions that require external energy
11. the correct number of reactants and products to satisfy the Law of Conservation of Mass
12. An insoluble substance is a substance (solid) that will not dissolve in a solvent even after mixing (eg; sand and water)
13. reactions that occur when two different atoms or molecules interact to form a different molecule or compound
14. a substance that is formed as the result of a chemical reaction
17. a solid formed by a change in a solution
19. The solid that dissolves is called the 'solute