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Science Ch. 4 Vocab.
| Word | Meanzing |
|---|---|
| Atomic Mass | average mass of one atom of an element |
| Periodic Table | a chart where all elemtnets are organized in the Periods and groups according to their properties |
| Chemical Symbol | one or two-letter codethat stands for an element |
| Period | a row of elements in the periodic table arranged by atomic number |
| Group | Column of elements in the periodic table, in which elementshave certain properties in common |
| Matter | the material that all objects and substances are made of. |
| Element | a single kind of substance that is pure |
| Compound | matter made of two or more elements that are chemically combined |
| Atom | building block of matter |
| Electron | negatively charged particle found outside the nucleus of an atom |
| Nucleus | center of an atom, make up of protons and neutrons |
| Proton | positively charged particle that is found in the nucleus of an atom |
| Energy Level | A region where electrons of the same energy are likely to be found |
| Mass number | sum of the protons and neutrons in an atom's nucleus |
| Neutron | a particle with no charge |
| Atomic Number | a number that is equal to the number of protons in an atom |
| Metal | An element that is typically hard, Shiny, ductile. fusible, and malleable |
| Malleable | Cen be hammered or rolled into other shapes |
| Ductile | can be pulled out or drawn out into a thin wire |
| Conductivity | the ability to conduct electricity |
| reactivity | The ability to be reactive |
| Corrosion | the process of corroding metal, stone, or other materials |
| Alkali Metal | any of the elements in group 1A. very reactive |
| Alkaline Earth metal | any of the elements in group 2A. reactive |
| Transition metal | any of the elements between groups 2A and 3A |
| Alloy | metal made by combining two or more metallic elements |
| Nonmetal | element that is not metal |
| Diatomic molecule | composed of two elements either having the same or different chemical elements |
| Halogen | any of the elements in group 7A. reactive and nonmetallic |
| Noble gas | any of the elements in group 8A. non reactive |
| Metalloid | An element whose properties are intermediate between those of metal and solid |
| Semi Conductor | A substance that conducts metals under certain conditions |
Created by:
DanielEberhart
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