Chemistry Crossword

4. When one element replaces another in a compound or when two elements in different compounds trade places
6. A substance made of two or more elements chemically combined in a specific ratio or proportion
7. A well mixed mixture
8. The different materials you have after a chemical reaction takes place
9. The process that breaks down compounds into simpler products
10. A shorter, easier way to show chemical reactions using symbols instead of words.
11. The study of the properties of matter and how matter changes
13. A reaction that absorbs energy making the substances feel cooler
14. A change in matter that forms one or more new substances
16. A reaction the releases energy in the form of heat
18. The materials you have at the beginning of a chemical reaction

1. A particle made of two or more atoms bonded together
2. Anything that has mass and takes up space
3. A solid that forms from solution during a chemical reaction
5. A substance that consists of two or more pure substances that are in the same place but not chemically combined
6. A combination of symbols that represent the elements in a compound
7. When two or more substances combine to make a more complex substance
12. The force that holds atoms together
15. The smallest stable unit of matter
17. A substance that cannot be broken down into any other substances by chemical or physical means