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unit 4 vocabulary
| Term | Definition |
|---|---|
| Atomic Mass | Average mass of one atom of air 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 Chemistry | A row of elements in the periodic table table arranged by atomic number. |
| Group | Column of elements in the periodic table, in which elements have certain properties in common. |
| Matter | The material that all objects and substances are made of ; anything that has mass and takes up space. |
| Element | Substances that are the building blocks of all matter ; An element is made up of one kind of atom. |
| Compound | Matter made up of two or more elements. |
| Atom | Smallest particle into which an element can be divided and still have the properties of that elements. |
| Electron | Negatively charged particel found outside the nucleus an atom. |
| Nucleus-Biology | Structure near the center of a cell that contains the cell's DNA. |
| Protons | Positively charged particle located in the nucleus or an atom. |
| Neutrons | In an atom, particle with a neutral charged: located in the nucleus. |
| Energy Level | The amount of energy carried by an electron an atom. |
| Isotope | Atoms of the same elements with different numbers of neutronsin the nucleus. |
| Mass Number | The sum of protons and neutrons in nucleus of an atom. |
| Atomic Number | The number of protons in the nucleus of an atom. |
| Metal | Elements usually solid with a shiny surface. |
| Malleable | A term used to describe material that can be pounded into shapes. |
| Ductile | A term used to describe ameterial that can be pulled out into a long wire. |
| Conductivley | The ability of an object to trans heat pr e;ectrocoty tp another object. |
| Reactivity | The ease and speed with thich an element combines, or reacts, with other elements and compounds. |
| Corrision | The gradual wearing away of a metal element due to a chemical reaction. |
| Allcali Metal | An element in group 1 of the periodic table. |
| Alkaline Earth Metal | A element in group 2 of th periodic table. |
| Transition Metal | One of the element in group 3 through 12 of the periodic table. |
| Alloy | A mixture of two or more elements, one of which is a metal. |
| Nonmeatal | An element that lacks most of the lproperties of a metal. |
| Diatomic Molecule | A molecule consisting of two atoms. |
| Hialogen | An element found in grouop 17 of the periodic. |
| Noble Gas | An element in group 18 of the periodic table. |
| Meta |
Created by:
kylarnk
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