Across
- 2. a quantity obtained
- 4. a part or aspect of something abstract, especially one that is essential or characteristic.
- 5. a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
- 7. a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work
- 12. changes affecting the form of a chemical substance
- 15. a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
- 16. any of a large group of organic compounds occurring in foods and living tissues
- 18. join or be joined by a chemical bond.
- 19. any of the class of soluble, crystalline, typically sweet-tasting carbohydrates found in living tissues and exemplified by glucose and sucrose.
Down
- 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
- 3. the basic unit of a chemical element.
- 6. when a substance combines with another to form a new substance
- 8. the degree or intensity of heat present in a substance or object
- 9. the sticking together of particles of the same substance.
- 10. any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents
- 11. the strength and vitality required for sustained physical or mental activity.
- 13. a simple organic compound containing both a carboxyl (—COOH) and an amino (—NH2) group.
- 14. the action or process of adhering to a surface or object.
- 16. a thing that is composed of two or more separate elements; a mixture.
- 17. a substance that takes part in and undergoes change during a reaction.