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Unit 4 Vocab.
| Term | Definition |
|---|---|
| Atomic Mass | average mass of one atom of an element |
| Periodic Table | A chart where all elements are organized into periods and groups according to their properties |
| Chemical Symbol | one or two letter code that stands for an element |
| Period | A row of elements in a periodic table arranged by atomic number |
| Atom | smallest particle into which an element can be divided and still have the properties of that element |
| Electron | Negatively charged particle found inside the nucleus of an atom |
| Nucleus | center of an atom made up of protons and neutrons |
| Proton | positively charged particle located in the nucleus of an atom |
| Group | column of an elements in the periodic table in which elements have certain properties in common also called chemical family |
| Matter | the material that all objects and substances are made of |
| Element | Substances that are the building blocks of all matter made up of an atom |
| Compound | matter mae of tow or more elements |
| Neutron | in an atom particle with neutral charge lecated in the nucleus |
| Energy Level | Amount of energy carriede by an electron in an atom determines the electrons average distance from the nucleus |
| isotype | atoms of the same element with different numbers fo neutrons in the nucleus |
| Mass Number | The sum of the protons and nuetrons in the nucleus |
| Atomic Number | numbe of protons in the nucleus of an atom of an element |
| metal | element usually solid with a shiny surface metals conduct electricity and thermal energy well |
| Mallealbe | Term use d to describe material that can be pounded in to shapes |
| Ductile | term use to describe a material that can be pulled out into long wire |
| Conductivity | The ability of an object to transfer heat fo electricity to another object |
| Reactivity | The ease and speed with which an element combines with the elements |
| Corrosion | The gradual wearing away of metal element due to a chemical reaction |
| Alkali metal | An element in Gl of the periodic table |
| Alkali Earth metal | an element in G2 of the periodic table |
| Transition metal | one of the elements in G3 of periodic table |
| alloy | Mixture of two or more elements one which is metal |
| Nonmetal | elements the lacks most of the properties of metal |
| Diatomic Molecule | a molecule consisting of two atoms |
| halogen | an element found in G17 of periodic table |
| noble Gas | element in G18 of the periodic table |
| Metalliod | element that has some characteristics of both metals and nonmetals |
| Semi Conductor | Substance that can cinduct electricty undersome conditions |
Created by:
NVorrice
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