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Newnam - Atoms & PT
Atoms & Periodic table
Question | Answer |
---|---|
A very small particle that makes up most types of matter | Atom |
Central part of the atom; Contains protons and neutrons | Nucleus |
Area around the nucleus where electrons are most likely to be found | Electron Cloud |
Negatively charged; Located in the electron clouds around the nucleus | Electron |
electrons in the outermost energy level of an atom; determine the chemical properties of an element | Valence Electrons |
Positively charged; Located in the nucleus; Mass is 1 amu; Determine the identity of the element | Proton |
Neutral or no charge; Located in the nucleus; Mass is 1 amu | Neutron |
Atom that has an electric charge ( + or - ) due to loss or gain of electrons | Ion |
The number of protons in the nucleus of each atom of that element | Atomic number |
The total number protons and neutrons in the nucleus of each atom of that element | Mass number |
weighted average mass of an atom of an element | Average Atomic Mass |
luster,malleable,conductor,color,shape, mass are all | Physical Properties |
describe how a substance reacts (Example: flammability) | Chemical Properties |
chart to help organize elements; In order by atomic number | Periodic Table |
rows in the periodic table; all elements have the same number of energy levels or shells | Period |
columns in the periodic table; all elements have similar properties | Group |
shiny, good conductors,mostly solids, malleable, ductile, left & middle | Metals |
dull, poor conductors,mostly gasses,right side of periodic table | NonMetals |
have properties of metals and nonmetals; found between metals and nonmetals | Metalloids |