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Vocab List 3
Chapters 2.3, 3.1 and 3.2
Term | Definition |
---|---|
Pressure | The force pushing on a surface divided by the area |
Boyle's Law | A principle that describes the relationship between the pressure and volume of a gas |
Charles' law | A principle that describes the relationship between the temperature and volume of a gas |
Nucleus | the central core of an atom containing protons and neutrons |
atom | the basic particle of all elements |
electron | the negatively charged particle that goes around the nucleus randomly |
mass number | the sum of protons and neutrons |
proton | the positively charged part of the nucleus |
atomic number | the number of protons |
model | a diagram, mathematical statement or object that helps understand a concept |
neutron | a small particle in the nucleus of an atom with no charge |
isotope | an element that has added or subtracted neutrons |
atomic mass | the average mass of all isotopes of an element |
periodic table | a chart of the elements organized by the number of protons |
period | a horizontal row in the periodic table |
group | elements in the same column |
chemical symbol | a one to three letter representation of an element |
alkali metal | an element in group 1 |
alkali earth metal | an element in group 2 |
halogen | an element in group 17 |
noble gas | an element in group 18- does not react |
metalloid | an element that is both a metal and nonmetal |
transition metals | an element in group 3-12 |