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| 4971040611 | Phosphate Group | consists of a phosphorus atom bonded to four oxygen atoms. It is usually ionized and attached to the carbon skeleton by one of its oxygen atoms. |  | 0 |
| 4971040612 | Amino Group | composed of a nitrogen bonded to two hydrogen atoms and the carbon skeleton. It acts as a base by picking up H+ from a solution. Organic compounds with an amino group are called amines. Amino acids, the building blocks of proteins, contain a carboxyl and an amino group. |  | 1 |
| 4971040613 | Carbonyl Group | a carbon atom is linked by a double bond to an oxygen atom. If the carbon of the carbonyl group is at the end of a carbon skeleton, the compound is called an aldehyde; if it is within the chain, the compound is called a ketone. Sugars contain a carbonyl group and several hydroxyl groups |  | 2 |
| 4971040614 | Hydroxyl Group | consists of a hydrogen atom bonded to an oxygen atom, which in turn is bonded to the carbon skeleton. Ethanol and other organic compounds containing hydroxyl groups are called alcohols. |  | 3 |
| 4971040615 | Carbonyl Group | Carbon with a double bonded oxygen |  | 4 |
| 4971040616 | Sulfhydryl | consists of a sulfur atom bonded to an atom of hydrogen |  | 5 |
| 4971040617 | Carboxyl Group | A functional group present in organic acids and consisting of a single carbon atom double-bonded to an oxygen atom and also bonded to a hydroxyl group. |  | 6 |
| 4971040618 | Methyl | consists of a carbon bonded to three hydrogens. Compounds with these groups are called methylated compounds. |  | 7 |
| 4971044434 | hydrogen bond | A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule. | 8 | |
| 4971046101 | covalent bond | A chemical bond formed when two atoms share electrons | 9 | |
| 4971048054 | ionic bond | Formed when one or more electrons are transferred from one atom to another | 10 | |
| 4971049285 | polar covalent bond | A covalent bond in which electrons are not shared equally | 11 | |
| 4971064616 | cation | A positively charged ion | 12 | |
| 4971065007 | anion | A negatively charged ion | 13 |
