Chapter 2 crossword

1. starting materials in a chemical reaction
3. basic unit of an element
4. the force that holds atoms together in a chemical compound
6. Chemical changes occur when a substance combines with another to form a new substance
7. a process that occurs when molecules move from an area of high concentration to an area of low concentration
9. a process in which a solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules by coming into contact
10. A base is a substance that reacts with an acid in an acid-base reaction
13. a broad group of organic compounds which include fats
14. In science, a product is a substance that is formed as the result of a chemical reaction
15. a thermodynamic quantity representing the unavailability of a system's thermal energy
16. Physical changes are changes affecting the form of a chemical substance
21. measure of hotness or coldness
23. any of a large group of organic compounds that includes sugars, starch, and cellulose, containing hydrogen and oxygen
24. proteins that act as biological catalysts by accelerating chemical reactions
26. a group of two or more atoms that are held together by chemical bonds
27. a simple organic compound containing both a carboxyl

2. A chemical substance composed of many identical molecules
3. sticking or attaching to something
5. Delays, slows or prevents a chemical reaction
8. cohesion is the act or state of sticking together1234
11. An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons
12. a substance that increases the rate of a chemical reaction
15. a pure substance that cannot be broken down
17. a sweet crystalline substance obtained from various plants
18. energy is the ability to do work or heat an object
19. such as the pole of a magnet or one of the electrodes of an electrolytic cell
20. substances that contain carbon
22. substance that takes up space and has mass
25. basic building block of nucleic acids