Term
|
Definition
| anything that takes up space and has mass. |
|
|
Term
|
Definition
| a substance that cannot be broken down to other substances by chemical reactions. |
|
|
Term
|
Definition
| a substance consisting of two or more elements combined in a fixed ratio. |
|
|
Term
|
Definition
carbon, oxygen, hydrogen, and nitrogen make up 96% of living matter.
Phosphorus sulfur, calcium, potassium and few other make up the other 4% |
|
|
Term
|
Definition
| those required by an organism in only minute quantities. |
|
|
Term
|
Definition
| smallest unit of matter that still retains the properties of an element. |
|
|
Term
|
Definition
|
|
Term
|
Definition
| the energy that matter stores because of its position or location. |
|
|
Term
|
Definition
| forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom. In living cells, the electronegative partners involved are usually OXYGEN or NITROGEN atoms. |
|
|
Term
| van der Waals interactions |
|
Definition
| weak and occur only when atoms and molecules are very close together. |
|
|
