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Unit 4 vocab

Unit 4 vocab for lewis

Atomic Mass Average mass of one atom of an element.
Periodic table A table where all element are arranged into periods and groups.
Chemical symbol One or two letter 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 preperties in common.
Matter The material that all objects and substances are made of.
Element Substances that are the building blocks of all matter
Compound Matter made of two or more elements.
Atom Smallest particle inot which on element can be divided and still have the preperties of that element.
Electron Negatively charged particle found outside the nucleus 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 electrons 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 pretons in the nucleus of one atom of an element
Metals Elements, usually solids, with a shiny surface
Malleable A term used to discribe 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 to in the air
Akali metals A group of elements in group 1
Akali earth metal An element in group 2
Alloy A mixture of one or more elements
Nonmetal An elementthat lacks most of the properties of a metal
Diatomic molecule A molecule consisting of two atoms
Halogens Elements in group 7A
Nobel gases Elements in group 8A
Metaloid Elements that has some characteristics of both metal and nonmetal
Semiconductor A substance that can conduct electricity
Created by: hunt4lyfe