Flashcards
C2.1 - The Atom
Cards in this deck (7)
- 1How big is an atom?- Diameter is 1x10^(-10)m
Order of Magnitude estimate
- 100 million atoms side by side would cover 1cm - 2MoleculeA group of atoms strongly joined together
- 3How big is a nucleus?- Diameter is 2x10^(-15)m
- Diameter of an atom is 50,000 times larger than it's nucleus - 4Nucleus- Made of protons (+) and neutrons (0 charge) with the same mass (1) - subatomic particles
- Electrons (-) orbit the nucleus - mass is negligible
- Same number of protons and electrons
- Atom has no overall charge - 5Atomic NumberNumber of protons (and/or electrons)
Located above the element symbol - 6Mass NumberNumber of protons and neutrons
- 7IsotopesAtoms of the same element with the same number of protons and different numbers of neutrons
Many elements have multiple isotopes
EG: Hydrogen has 3 isotopes (1p+1n, 1p+0n, 1p+2n)
Written with the mass number on top and atomic number on the bottom
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- Description
- GCSE Chemistry (C2 - Chemical Patterns) Flashcards on C2.1 - The Atom, created by Aalia Rizvi on 09/11/2017.
- Created by
- Aalia Rizvi · Nov 2017
- Updated
- Nov 9, 2017
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