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science atom
15 study stacks
Question | Answer |
---|---|
what is the study of matter | chemistry |
what is an ion | an atom that has gained or lossed electrons |
what is a compound | a substance formed when 2 or more different elements join together |
what is a molecule | an atom held together by chemical force. |
what is acid | a compound that forms hydrogen ions when dizolved |
what is a base | a compound that forms hydroxide ions when dizolved in water |
what is a Ph scale | detirmines the concentration of, or the amount of, acids and bases in a solution |
what is salt | a substance formed when a base and acid combine |
what is an atom | the smallest part of an element |
whats a nucleas | center section of an atom |
whats the atomic number | number of protons in a nucleas |
whats the atomic theory | what scientist think about atoms |
what is a family | a group of elements that possess similair chemical properties |
what are groups | vertical columns that have the samae number of electrons in there outer shell |
what is a chemical change | joining of different types of atoms to forma a compound |