Across
- 5. the electrons in the outer energy level of an atom
- 7. a more active element takes the place another element in a compound
- 9. substances you start with
- 10. substances you end up with
- 11. biochemical compounds such as fats and oils
- 13. a reaction in which energy is absorbed
- 16. a chemical compound that is mainly composed of carbon, hydrogen, and possibly other elements
- 18. speeds up a chemical reaction
- 19. a single compound breaks down into its component parts or simpler compounds
Down
- 1. biochemical compounds that consist of one or more chains of amino acids
- 2. only refer to the atom they are behind
- 3. Biochemical Compounds that include DNA and RNA
- 4. any carbon-based compound found in living things
- 6. Ions in two compounds “change partners”
- 7. two or more elements or compounds may combine to form a more complex compound
- 8. apply to the entire compound
- 12. bond where electrons are shared between two nonmetals
- 14. a reaction in which energy is released
- 15. biochemical compounds that include sugars, starches, and celluose
- 17. when a substance reacts with oxygen to produce energy in the form of heat and light