Flashcards
Atomic Number and Mass Number
Cards in this deck (7)
- 1Atomic number is used to identify what element an atom belong toEach element has a unique atomic number
- 2The atomic number is the number of protons in the nucleusThe symbol for the atomic number is 'Z'
- 3The mass number of an atom is the number of protons + neutronsThe symbol for the mass number is 'A'
- 4If atoms have the same atomic number but different mass number they are...Isotopes
- 5Isotopes were first suggested by Frederick Shoddy in 1913Carbon 14 is an isotope used in dating artifacts
- 6The periodic table is a list of all known elements ordered by atomic numberDmitri Mendeleev ordered the first periodic table by atomic number
- 7The modern periodic table contains 118 elementsNew elements are still being discovered!
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- Leaving Certificate Science Flashcards on Atomic Number and Mass Number, created by PatrickNoonan on 21/11/2013.
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- PatrickNoonan
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