Vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Mendeleev | write names of all elements/ found pattern
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| nucleus | the very small center core of an atom
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| proton | partice of an atom in nucleus with a positive charge
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| neutron | partice of an atom in nucleus with no charge
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| electron | partice of an atom that moves rapidly around nucleus with a negative charge
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| atomic number | the number of protons in the nucleus
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| isotope | an atom that differs in the number of neutrons but has the same number of protons
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| mass number | the sum of protons and neutrons in the nucleus of an atom
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| period | row in periodic table
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| group/family have | similar characteristics
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| nuclear fusion | process in which two smaller atomic nuclei are forced togther forming a larger nuclei
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| plasma | a gas like state of matter consisting of free electrons and atomic nuclei
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| malleable | hammered into other shapes
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| ductile | pulled out into a long wire
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| conductivity | transfer heat to another object
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| reactivity | ease which an element combinded with other elements and compounds
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| corrosion | slow destrction of a metal through its reaction with oxygen in the air
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| ion | loss or gain of an electron
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| isotopes | have fewer or more neutrons in the nucleus than normal
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| compound | when atoms of two different elements combinde chemically
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| covalent chemical bonds | occur when two or more atoms combinde sharing electrons to form a molecule
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| ionic bonds | when atoms are held toghter by unlike electrical charges they form
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| nuclear fusion | the process where atomic nuclei of hydrogen are forced togther to create heavier atoms is known as
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| nuclear fission | the process of splitting heavy atoms into lighter atoms
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| radiation | the energy given off by nuclear fission
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| diatomic molecule | formed of two atoms
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| halogen | a family of very reactive elements whose atoms gain or share 1 electron
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| metalloid | a type of element that has some of the charasterics of metals and some non-metals
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| noble gases | a family of un reactive elements whose atoms do not gain,lose or share valence electrons
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| nonmetal | type of element whose physical properties aer generally opposite of that of metals
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| semiconductor | a substance that carries electricity under certain circumstances, but not under others
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