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14-1 Mrs. Fuller

Science vocab 14-1

Atom The basic building block of matter
Electron A negativity charged particle in an atom
Element A substance that can not be broken down and it is pure
Ion An atom that has a different number of electron than protons
Isotopes Atoms with the same number of protons but with the different number of neutrons
Neutrons An charged particle in the nucleus of an atom
Periodic table A table of chemical elements arranged in order of atomic number usually in rows
Proton A positively charged particle in an atom
Nucleus The central part of an atom
J. J. Thomson An English scientist that discovered electrons by preforming an experiment with a cathode ray "Plum - Pudding Model"
Niels Bohr A Danish scientist who disagreed with J. J. Thompson and found out that electrons travel in orbital (energy levels) around the nucleus
Radiation Energy in the form of electromagnetic waves
Metals Shiny and conduct electricity and heat. One way to characterize a element. To the left of the stair steped line
Non-metals Dull luster and are poor conducters of electricity and heat. One way to characterize an element. To the right of the stair steped line
Semi-metals Condicts electricity and heat better than non-metals but poorly than metals. Also called metaliods. Found along the stair stepped line execpt AL.
Dmitiri Mandeleyez Made the first periodic table with 63 elements
Chemistry A branch of science that studies the structure properties and reactions of the chemical elemements and compounds they form.
Created by: shreyashreya11