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Chemistry Vocab

Science Vocab

TermDefinition
Atomic Mass The average mass of one atom of an element
Alloy a metal made by combining two or more metallic elements
Alkali Metals very reactive metals. They occupy group IA of the periodic table.
Alkaline earth metals This metal has there outermost electron in an s-orbital
Atomic mass unit(amu) a unit of mass used to express atomic and molecule weight.
Atomic Number the number of protons in the nucleus of the atom.
Actinide any of the series of the 15 metallic elements from actinium
Corrosion the process pf corroding metal stone or other materials.
Conductor a material through which electric can pass
Chemical symbol a code for a chemical element.
Ductile able to be deformed with losing toughness;pliable, not brittle
Diatomic molecule composed of only two atoms of either the same or different chemical elements.
Electron a stable subatomic particle with a charge of negative electricity
family a group of chemicals on the periodic table
group same as family
Halogen family exist in the free state normally as diatomic molecules
Metalloid an element whose properties are intermediate between those of metals and solid nonmentals. (semi conductor)
Magnetic capable of being attracted by or acquiring the properties of a magnet
Malleable able to be hammered or pressed permanently out of shape without breaking or cracking.
Nonmetal an element or substance that is not metal
Noble gas not reactive
Nucleus the central and most important part of an object
Nuclear fusion a nucleus reaction in which atomic nuclei of low atomic fuse to form a heavier nuecleus with the release of energy.
Neutron a subatomic particle of about the same mass as a proton but without an electric charge
Periodic Table a table of chemical elements
Proton a stable subatomic particle occurring in all atomic nuclei
Plasma an ionized gas consisting of positive ions and free electrons
Period a name given to a horizontal row of the periodic table
Reactivity the state or power of being reactive
Semicounductor a solid substance that has a conductivity between that of an insulator and that of most metals
Supernova a star that suddenly increased gently in brightness because of a catastrophic explosion.
Transition metal strong tendency to form coordination compounds and many of them are colored
Valence electron associated with an atom. Can participate in the formation of a chemical bond.
Created by: 15bokun1