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biology

first handout

QuestionAnswer
when carbon 14 decays, it becomes nitrogen 14
atoms have the same number of protons but different numbers of neutron called isotope
the nucleus of an atom is made up of what two particles neutron-proton
an atom that gains an electron is called anion
when there is not enough carbon 14 left- fossils over 50,000 years what isotope is used instead potassium 40
atoms that exchange an electron is called ionic
when a molecule has a partial positive end and a partial negative end it is said to be polar opposite
the number of protons in an element is called atomic
atoms that share electrons form -- bonds covalent
protons have a -- charge positive
electrons have a --charge negative
neutrons have a -- charge no
what makes one element different from another protons
how long is a half life of carbon 14 5,700
which is the weakest bond hydrogen
name two things that all living things have metabolism and heredity
Created by: murmurs79
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