Organic compounds

4. Compounds composed of only carbon and hydrogen
6. Compounds that do not contain carbon
7. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1.
12. the study of all chemicals containing carbon
13. the chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere
14. Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.
15. A substance made up of atoms of two or more different elements joined by chemical bonds
17. a colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
18. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
19. A pure substance made of only one kind of atom
20. the chemical element of atomic number 16, a yellow combustible nonmetal

1. the chemical element of atomic number 6, a nonmetal that has two main forms (diamond and graphite) and which also occurs in impure form in charcoal, soot, and coal.
2. the starches and sugars present in foods
3. Compounds that contain carbon
5. carbon, hydrogen, oxygen, nitrogen
8. amino acids
9. A combination of chemical symbols and numbers to represent a substance
10. small unit that can join together with other small units to form polymers
11. the chemical element of atomic number 15, a poisonous, combustible nonmetal that exists in two common allotropic forms, white phosphorus, a yellowish waxy solid which ignites spontaneously in air and glows in the dark, and red phosphorus, a less reactive form used in making matches.
16. large compound formed from combinations of many monomers