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classifying elements
vocb
Question | Answer |
---|---|
proton | a particle in the space inside the nucleus of an atom that carries |
neutron | |
electron | a particle in the space outside the nucleus of an atom that carries one unit of negative electric |
atomic number | the number of protons in a single atom of an element |
molecule | a particle that contains two or more |
metals | a substance that conducts heat and electricity |
nonmetal | a group of elements that are poor conductors of heat |
noble gases | the nonmetallic elements helium neon argon krypton |
metalloids | a small group of elements with some properties |
periodic table | a chart that shows all of the known elements and their proper |