Question | Answer |
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 |