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Science test 1
Flashcards
Question | Answer |
---|---|
proton | a positively charged particle |
electron | a negatively charged particle |
neutron | a uncharge particle |
nucleus | the core of an atom |
element | a substance that make only one kind of atom |
molecule | 2 or more atom that bond together |
atomic # | the # of proton in a atom |
atomic mass (#) | the # of protons and neutrons in a atom |
isotopes | atoms that gain or loses one or more electron(s) |
ions | atoms that gain or loses one or more neutron(s) |
periodic table | a repeating pattern of properties of elements |
periods | horizontal rows in the periodic table |
metals | elements that conduct electricity and heat and are shiny |
alloys | the combination of 2 or more metals |
metalloid | elements that have properties of both metals and non- metals |
non-metals | have properties opposite of metals |