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Unit 4 Vocab
Unit 4 Vocab for Lewis
| Term | Definition |
|---|---|
| Atomic Mass | Average mass of one atom of an element. |
| Periodic Table | A chart where all evidence is organized in periods and groups. |
| Chemical Symbol | One or two letter code that stands for an element. |
| Period | A row of elements in the periodic table arranged by atomic number. |
| Group | A 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. |
| Element | Subtances that are the building blocks of all matter. |
| Compound | Matter made of two or more elements. |
| Atom | Smallest particle into which an element can be divided and still have properties of that element. |
| Electron | Negatively charged particle found outside the nucleous of an atom. |
| Nucleus | Structure near the center of a cell that contains the cells DNA. |
| Proton | A small, positively charged particle in the nucleus of the Atom. |
| Neutron | A cell that carries information through the nervous system. |
| Energy level | The amount of energy carried by an electron in an atom. |
| Isotope | Atoms of the same element with different number of neutrons in the nucleus. |
| Mass Number | The sum of protons and neutrons in the nucleus of an atom. |
| Atomic Number | Number of protons in the nucleus of one atom of an element. |
| Metal | Elements, usually solid, with shiny surface. |
| Malleable | A term used to describe material. |
| Ductile | Material that can be pulled out into a long wire. |
| Conductivity | Transfer of heat from a warmer substance to a cooler substance through direct contact. |
| Reactivity | The state or power of being reactive or the degree to which a thing is reactive. |
| Corrosion | Some metal react with oxygen in the air. |
| Akali Metal | A group of elements in group 1. |
| Allkaline Earth Metal | An element in group 2. |
| Transition Metal | Element in group 3. |
| Alloy | A mixture of one or more elements. |
| Nonmetal | An element that lacks most of the properties. |
| Diatomic Molecule | A molecule consisting of two atoms. |
| Halogens | Elements in group 7A. |
| Nobel Gases | Elements in group 18. |
| Metalloid | Element that has some characteristics of both metal and nonmetal. |
| Semi Conductor | A substance that can conduct electricity. |
Created by:
Maddie8
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