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ECG Science

Atomic Mass? The average mass of one atom of the element.
Periodic Table? The properties of the elements repeated in each row or period of the table.
Nucleus? The core in an atom containing protons and neutrons.
Neutron/Protons? Small particles inside a nucleus.
Electrons? Particles circling around the nucleus.
Atomic Mass Unit(AMU)? Measures the particles in atoms.
Atomic Number? The number of protons in an atoms' nucleus.
Chemical Symbol? One or two letter symbols that identify an element.
Group? The elements in a vertical column.
Family? Another name for "Group".
Period? Horizontal row across the table that contains a series of different types of elements.
Valence Electrons? Electrons that are involved in transfer or sharing.
Malleable? Material that can be pounded into shapes.
Ductile? Material that can be pulled or drawn out into a long wire.
Conductor? Transmits heat and electricity easily.
Magnetic? Metals that are attracted to magnets and can be made into magnets.
Reactivity? The ease and speed with which an element combines or reacts with other elements and compounds.
Corrosion? The gradual wearing away of the metal element due to a chemical reaction.
Alloy? A mixture of two or more metals.
Alkali Metal? An element in "Group 1" of the Periodic Table.
Alkaline Earth Metal? An element in " Group 2" of the Periodic Table.
Transition Metal? An element in " Group 3-12" of the Periodic Table.
Lanthanide An element in the first row of the "Rare Earth Elements" in the Periodic Table.
Actinide? An element in the second row of the "Rare Earth Elements" in the Periodic Table.
Non-Metal? Elements that lack most properties of metal.
Diatomic Molecule? Molecules of two identical atoms formed by non-metals.
Halogen Family? Group 17 of the periodic table; includes Fluorine, Chlorine, Bromine, Iodine, and Astatine.
Noble Gas? Elements in "Group 18" of the Periodic Table.
Metalloid? An element that has some of the characteristics of metals and non-metals
Semiconductor? An element that can conduct electricity under some conditions
Created by: Erika_deee



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