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BIO 117
Chapter 2
| Term | Definition |
|---|---|
| Matter | anything that occupies space and has weight |
| Element | is matter that is composed of atoms that have the same number positive charges in their nuclei |
| Atom | is the smallest unit of an element with that element's chemical characteristics |
| Isotope | a different form of the same atom |
| Ionic Bond | is caused by a transfer of electrons between atoms |
| Covalent bond | involves a sharing of electrons by the outer shells of atoms |
| Hydrogen Bond | Illustrated by the weak attraction between water molecules |
| Electrolyte | is a substance that forms ions when it is dissolved in water |
| Ion formation | ions are formed when electrons in the outer shell are lost or gained |
| Molecule | when two at more atoms bond |
| Compound | a substance that contains molecules formed by two or more different atoms |
| Chemical Reaction | is a process where the atoms of molecules or compounds interact to form new chemical reactions |
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Ekane34