Across
- 1. the branch of chemistry that deals with inorganic compounds.
- 6. the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide from the atmosphere.
- 7. the temperature at or near a surface.
- 13. the study of the structure, properties, composition, reactions, and preparation of carbon-containing compound.
- 14. the branch of science that explores the chemical processes within and related to living organisms.
- 16. a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states.
- 18. chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere.
- 19. simply enough, gas that has been dissolved into another material.
Down
- 2. colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.
- 3. the quantity of three-dimensional space enclosed by a closed surface.
- 4. a solid chemical compound with a fairly well-defined chemical composition and a specific crystal structure, that occurs naturally in pure form.
- 5. both a property of a physical body and a measure of its resistance to acceleration when a net force is applied.
- 8. steep temperature gradient in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
- 9. the closing down or dismissal of an assembly, partnership, or official body.
- 10. colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
- 11. the process of eroding or being eroded by wind, water, or other natural agents.
- 12. ionic compound which, when dissolved in water, break up completely into ions.
- 15. the saltiness or amount of salt dissolved in a body of water, called saline water .
- 17. degree of compactness of a substance.