scinece
Quiz by james w
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26 questions
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- Q1Smallest piece of an element that still represents the element.What is an atom?30s
- Q2Atomic particle with one negative charge (1-).What is an electron?30s
- Q3Area around an atomic nucleus where an electron is most likely to be found.What is an electron cloud?30s
- Q4Neutral particle in the nucleus of an atom.What is a neutron?30s
- Q5Small area in the center of an atom in which most of an atom's mass and positive charge is concentrated.What is a nucleus?30s
- Q6Atomic particle with one positive charge (1+).What is a proton?30s
- Q7The number of protons in an atom of an element.What is the atomic number?30s
- Q8Average mass of an element's isotopes, weighted according to the abundance of each isotope.What is average atomic mass?30s
- Q9Atom that is no longer neutral because it has gained or lost electrons.What is an ion?30s
- Q10positive ion, lost an electroncation30s
- Q11negative ion, gained an electronanion30s
- Q12Any of two or more atoms of the same element that have different numbers of neutrons.What is an isotope?30s
- Q13Sum of the number of protons and neutrons in an atom.What is mass number?30s
- Q14Greek philosopher that hypothesized all matter is composed of tiny indestructible units, called "atomos"Who is Democritus?30s
- Q15Greek philosopher that believed all matter was made up of only 4 elements - fire, water, earth or airWho is Aristotle?30s