Across
- 2. molecules that contain carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur
- 3. a chemical reaction releases more energy than it absorbs
- 5. change substances into different substances by breaking and forming chemical bonds
- 11. when the products and reactants are at the same concentration
- 12. polymers that are made up of monomers called nucleotides
- 15. molecules made of carbon, hydrogen, and oxygen
- 17. substances changes during a chemical reaction
- 18. substances made by a chemical reaction
Down
- 1. chains of carbon atoms bonded to hydrogen atoms
- 4. large molecule made of several parts
- 6. a chemical reaction absorbs more energy that it releases
- 7. catalysts for chemical reactions in living things
- 8. the amount of energy that will break a bond between two atoms
- 9. nonpolar molecules that include fats, oils, and cholesterols
- 10. a polymer made of monomers called amino acids
- 13. increases the rate of the chemical reaction
- 14. the amount of energy that needs to be absorbed for a chemical reaction to start
- 16. specific reactants that an enzyme acts on