Flashcards
Additional Chemistry
Flashcards do conjunto (8)
- 1Topic 1Discovering Chemistry
- 2Mendeleev's periodic table> arranged in increasing atomic mass
> similar properties lined up
> used this to predict undiscovered elements and left gaps for them - 3Structure of the atom> Nucleus : protons and neutrons (equal in a neutral atom)
> Surrounded by energy shells filled with specific numbers of ectrons - 4Relative charge and mass on each subatomic particle> Proton: +1 charge: 1 mass
> Neutron: 0 charge: 1 mass
> Electron: -1 charge: negligible mass - 5Atomic number Atomic mass Relative atomic massAN: number of protons
AM: protons and neutrons
RAM: every element compared to a carbon-12 - 6Structure of modern periodic table> horizontal lines : increasing atomic number : periods
> vertical lines : similar properties : groups - 7IsotopesVariation of an element with the same number of protons and different number of neutrons
- 8Calculate Relative Atomic Mass(p1*an1) + (p2*an2) / 100
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- Ks3 Science FlashCards sobre Additional Chemistry, criado por zaroon_riaz em 12-05-2015.
- Criado por
- zaroon_riaz
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