ch.10 exploring atoms
Terms
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- a shorthand way to write the name of an element
- chemical symbol
- atomic particle with no charge that is part of an atoms nucleus
- necleus
- negatirely charged particles that move around the nucleus of an atom
- electron
- atomic particle with a positive charge that is part of an atoms nucleus
- proton
- particle with no change that is part of an atoms nucleus
- neutron atomic
- the number of protons in an atoms nucleus
- atomic number
- region where electrons must probably are found surroundding the nucleus
- electron cloud
- very small particles of matter that makes up protons and neutrons
- quark
- sum of the number of protons and neutrons is an atoms necleus
- mass number
- atoms of the same element that have different numbers of neutrons
- isotope
- a table of the elements arranged according to repeaded changes in properties
- periodic table
- in the periodic table each of the 18 vertical columns of elements each group
- group
- a diagram to represent electrions in the outer energy level of an atom
- dot diagram
- a horizontal row in the periodic table
- period
- element usually having these common propeties shiny good conductors
- metal
- elements that usally are gasses of brittle solids a room temperature
- nonmetal
- elements having properties of both metals and non metals
- metalloid