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Chem 3
Vocab
| Question | Answer |
|---|---|
| Mendeleev | write names of all elements/ found pattern |
| nucleus | the very small center core of an atom |
| proton | partice of an atom in nucleus with a positive charge |
| neutron | partice of an atom in nucleus with no charge |
| electron | partice of an atom that moves rapidly around nucleus with a negative charge |
| atomic number | the number of protons in the nucleus |
| isotope | an atom that differs in the number of neutrons but has the same number of protons |
| mass number | the sum of protons and neutrons in the nucleus of an atom |
| period | row in periodic table |
| group/family have | similar characteristics |
| nuclear fusion | process in which two smaller atomic nuclei are forced togther forming a larger nuclei |
| plasma | a gas like state of matter consisting of free electrons and atomic nuclei |
| malleable | hammered into other shapes |
| ductile | pulled out into a long wire |
| conductivity | transfer heat to another object |
| reactivity | ease which an element combinded with other elements and compounds |
| corrosion | slow destrction of a metal through its reaction with oxygen in the air |
| ion | loss or gain of an electron |
| isotopes | have fewer or more neutrons in the nucleus than normal |
| compound | when atoms of two different elements combinde chemically |
| covalent chemical bonds | occur when two or more atoms combinde sharing electrons to form a molecule |
| ionic bonds | when atoms are held toghter by unlike electrical charges they form |
| nuclear fusion | the process where atomic nuclei of hydrogen are forced togther to create heavier atoms is known as |
| nuclear fission | the process of splitting heavy atoms into lighter atoms |
| radiation | the energy given off by nuclear fission |
| diatomic molecule | formed of two atoms |
| halogen | a family of very reactive elements whose atoms gain or share 1 electron |
| metalloid | a type of element that has some of the charasterics of metals and some non-metals |
| noble gases | a family of un reactive elements whose atoms do not gain,lose or share valence electrons |
| nonmetal | type of element whose physical properties aer generally opposite of that of metals |
| semiconductor | a substance that carries electricity under certain circumstances, but not under others |
Created by:
amanda2992
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