Chemical Reactions

2. What chemical reaction is responsible for burning things?
5. If there is no subscript then it is assumed that there are/is ___ atom/atoms of that element in the compound.
7. The science of naming elements.
9. Helps balance out chemical equations by changing the number of mols.
13. A bond between two atoms due to positive and negative charges.
15. The least reactive elements on the periodic table that have full valence shells.
16. What is characteristic of a combustion reaction?
18. A way to decompose water into hydrogen and oxygen gas.
19. Shows the number of atoms present in certain compounds or elements.
20. Neither created nor destroyed in a chemical reaction.
23. When two compounds come together and trade one or more of their elements to each other to create two new compounds.
25. Needs to be added for some reactions to occur.
26. Speeds up a chemical reaction without being used up.
27. When two or more elements join together and become a compound.
29. When a compound of two or more elements is broken down into 2 or more elements.
30. A substance that dissolves in water.

1. Which side of a chemical reaction are the reactants on?
3. An equation that follows the law of conservation of mass.
4. A chemical equation with the compounds written out.
6. Which side of a chemical equation are the products on?
8. What is absorbed or given off in a chemical reaction?
10. These types of reactions burn and are responsible for when we burn something.
11. When an element and a compound come together and rearrange to form a new compound and a new element.
12. A specific group of atoms held together by chemical bonds.
14. What does the arrow in a chemical equation represent?
17. A bond where two or more atoms share their electrons to obtain full octets.
21. An element that always occurs in pairs in nature.
22. An unbalanced chemical equation.
24. The outermost shell of electrons.
28. What is characteristic of an acid-base neutralization reaction?