Flashcards
C2.1 - The Atom
Flashcards do conjunto (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
Informações
- Descrição
- GCSE Chemistry (C2 - Chemical Patterns) FlashCards sobre C2.1 - The Atom, criado por Aalia Rizvi em 09-11-2017.
- Criado por
- Aalia Rizvi · nov 2017
- Atualizado
- 9 nov 2017
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