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biology c 6
chapter 6
| Question | Answer |
|---|---|
| element | A substance that can't be broken down into simpler chemical substances. |
| Atom | Smallest particle of an element that has the characteristics of that element |
| Nucleus | The center of an atom |
| isotopes | Atoms of the same element that have different numbers or neutrons. |
| Compound | A substance that is composed of atoms of two or more different elements that are chemically combined. |
| covalent bonds | the force that holds two atoms together. |
| molecule | a group of atoms held together by covalent bonds and having no overall charge. |
| ion | A charged particle |
| Metabolism | All of the Chemical Reactions that occur within a orgaism |
| Mixture | a combination of substances n which the individual compounds retain their own properties |
| solution | a mixture in which one or more substances are distributed evenly in another substsnce |
| acid | any substance thast forms hydroxide ions in water |
| Base | |
| Polar molecule | a molecule with an un equal distributon of charge. |
| Hydroen bond | The attraction of opposite charges between hydrogen and oxygen forms a weak bond |
| Diffusion | The net movement of pairings from am area ofhiger concentration to an area of lower concetration. |
| Polymer | A large molecule formed when many smaller molecules bond together to the structer of carbohydrates. |
| Carbohydrate | An organtic compound composed of carbon, hydrogen, and oxygen with a raito of 2 hydrogen and 1 oxygen atom for every carbon atom |
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