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atom the basic particle from witch all elements are mad
electron a tiny negatively charged particle that moves around the outside of the nucleus
nucleus in cells a large oval organelle that contains the cells genetic material in the form of DNA and controls many of the cells activites
proton small positively charged particles that are found in the nucleus of an atom
energy level a region of an atom in which electrons of the same energy are likely to be found
neutron a small particle in the nucleus of thee atom with no electrical charge
atomic number the number of protons of an atom
isotope an atom with the same number of protons and a different number of neutrons from other atoms of the same element
mass number the sum of protons and neutrons in the nucleus of an atom
metal a class of elements characterized by physical properties that included shininess malleability ductility and conductivity
luster the way a mineral reflects light from its surface
ductile a term used to describe a material that can be pulled out into a long wire
thermal conductivaty a chemical bond formed when atoms share 3 pairs of elements
electrical conductivity the ability of an object to carry electric current
reactivity the ease and speed with which an element combines or reacts
alkali metal an element invgroup 1 of the periodic table
alkaline earth metal an element in group 2 of the periodic table
transition metal
Created by: 15cannanmar