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Chemistry Vocabulary
Water , pH, Atoms, Macromolecules
| Term | Definition |
|---|---|
| Atom | basic unit of matter |
| Element | substance consisting of one type of atom |
| Isotope | atom of an element that has a number of neutrons different from that of other atoms of the same element |
| compound | chemical combination of two or more elements |
| ionic bond | A bond created by the attraction between a positive and negative ion. |
| ion | An atom that has a positive or negative charge because it is missing an electron or has an extra electron. |
| covalent bond | a bond between two atoms in which electrons are shared. A covalent bond can either be polar or non polar. |
| van der waals forces | Intermolecular forces of attracton |
| Polar molecule | a molecule in which the charges are unevenly |
| hydrogen bonds | two hydrogen atoms and one oxygen atom connected by polar covalent bonds. |
| cohesion | an attraction between molecules of the same substance |
| adhesion | an attraction between molecules of a different substance |
| solution | mixture of two or more substances in which the molecules of the substances are evenly distributed |
| suspension | mixture of water and non-dissolved materials |
| ph scale | pH: A measure of how acidic or basic a substance is. The pH scale goes from 0 - 14. A pH of 7 is neutral. A pH less than 7 is acidic. A pH greater than 7 is basic. |
| Buffers | weak acid or base that can react with strong acids or bases to help prevent sharp; sudden changes in PH |
| carbohydrate | A sugar or starch. Carbohydrates are large molecules or polymers. Carbohydrates are made of monomers called monosaccharides. Carbohydrates are used as an energy source. Examples of carbohydrates include glucose and glycogen. |
| Monosacccharid | singel sugar molecule |
| polysaccharides | Large macromolecule formed from mommosacharids |
| lipid | macromolecule made mainly from carbo and hydrogen atoms; includes fats, oils, and waxes |
| nucleic acids | macromolecule contaning hydrogen, oxygen,nitrogen,carbon, and phosphorus |
| nucleotides | The building block (monomer) of nucleic acids (DNA and RNA) Nucleotides are composed of a phosphate, sugar, and a nitrogen base. |
| proteins | macromolecule that contains carbon,hydrogen, oxegen,and nitrogen; nedded by body for growth and repairing and makeingup enzymes |
| amino acids | The monomer (building block) of a protein |
| Hydrophilic | love water |
| hydrophobic | fear of water |
| homeostasis | Keeping your insides in balance; maintaining a stable internal environment. This is one of the five characteristics of life. ... |
Created by:
dani_g
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