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science
science vocabulary
Term | Definition |
---|---|
proton | A particle in the space inside the nucleus of an atom that carries one unit of positive electric charge. |
neutron | |
electron | a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge |
atomic number | the number of protons in a single atom of an element |
molecule | a particle that contains two or more atoms joined together |
metals | a substance that conducts heat and electricity |
non metal | a group of elements that are poor conductors of heat and electricity |
noble gases | the nonmetallic elements helium, neon, arogn |
metalloids | |
periodic table |