Flashcards
Chemistry- Atomic Structure 1
Flashcards do conjunto (28)
- 1Nucleus containsProtons, Neutrons and Electrons
- 2Electrons exist in layers called...Shells
- 3The arrangement of electrons is calledelectronic configuration
- 4How many electrons can the first shell hold?2
- 5The 2nd 3rd... can hold how many electrons8
- 6Electronic Configuration of calcium2,8,8,2
- 7electronic configuration of nitrogen2,5
- 8electronic configuration of Oxygen2,8,6
- 9Protons, Neutrons, and Electrons are known as...Subatomic particles
- 10Atomic numbernumber of protons in an atom
- 11neutrons =mass number - atomic number
- 12electrons =same as protons
- 13mass number =number of protons + number of neutrons
- 14What are proton relative mass, charge and positionrelative mass= 1
charge= +1
position= nucleus - 15what are neutron relative mass, charge and positionmass= 1
charge=o
position= nucleus - 16what are electron relative mass, charge and postionmass= 1/1840
charge= -1
position= shells - 17Why are atoms always neutral (have no charge)Same amount of protons and electrons
- 18Who Developed the electron?Thomson
- 19What model did Thomson use?Plum Pudding model
- 20What did Thomson think?negatively charged electrons were embedded with a sphere of positive charge
- 21Who developed the proton?Rutherford
- 22What did Rutherford suggest?electrons orbit a positively, charged nucleus
- 23Who discovered the neutron?Chadwick
- 24Why was neutron difficult to detect?It has no charge (neutral)
- 25The radius of an atom0.1nm (1x10-10m)
- 26radius of the nucleus10x-14m
- 27—12= mass number
6= atomic number - 28—
Informações
- Descrição
- GCSE CHEMISTRY FlashCards sobre Chemistry- Atomic Structure 1, criado por Gracee Moore em 03-02-2020.
- Criado por
- Gracee Moore · fev 2020
- Atualizado
- 3 fev 2020
- Visualizações
- 0
- Avaliação