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Bio Elements

TermDefinition
known elements 109
atoms smallest unit an element can be divided into
elements occur in living things 25
CHONPS carbon, hydrogen, oxygen, nitrogen, phosphorus & sulfur
isotope the number of neutrons are changed
ion protons & electrons aren't equal
negative ion more electrons than protons
positive ion more protons than electrons
valence electron electrons in the outermost shell
helium on the right because... it has full valence, 2 of 2, not 2 of 8
happy atom has a full valence shell & group 8 is happy so they don't react
covalent bonding sharing an electron, non-metal & non-metal
hydrocarbons hydrogen & carbon molecules
CHONPS behavior act like non-metals; gain; forming covalent bonds
ionic bonding one gains, the other loses & between metal and non-metal
Created by: Isabela Reyes
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