Question | Answer | |
Nucleus,Central core of an atom contaning protons and usaully neutrons | Periodic table,Chart of elements showing the repeating pattern of their properties | Non Metal,An element that lacks most of the properties of a metal |
Period, Horintal row of elements in the periodic table | Atomic mass,Average mass of all the isotopes of an element | Noble Gasses, An element in group 18 of the periodic table |
Isotope,An atom with the same number of protons and a different number of neutrons from other atoms of the same element | Electron,A tiny negatively charged particle that moves around the nucleus of an atom | matla, A class of elements characterized by physical properties that include shininess, malleability ductility conductivity |
Synthetic elements,Elements with atomic number higher than 92; not found naturally on earth | Chemival symbol, A one-or-letter representation of an element | |
Conductivity,Ability of an object torci transfer or elecricity to another object | Malleable,A term used to describe material that can be pounded into shapes | |
Group/Family, Elements in the same verticaly column of the periodic table; also called family | Protons,A small positively charged particle in the nucleus of the atom | |
Mass number,sum of protons and neutrons in the nucleus of an atom | Atimic number,Number of protons in the nucleus of an atom | Ductill,A term used to describe a material that can be pulled out into a long wire |