Flashcards
C1
Flashcards do conjunto (27)
- 1How many electrons can the first 3 shells in an atom hold?Shell 1 = 2
Shell 2 = 8
Shell 3 = 8 - 2What are the 3 subatomic particles?Protons, neutrons and electrons
- 3What is the mass of a neutron?1
- 4How do you find the number of neutrons in an atom?Atomic mass number - atomic number
- 5Define an isotope ...An atom that has the same number of protons and electrons but different numbers of neutrons in their nuclei.
- 6Define a solution ...The mixture when a solute has dissolved in a solvent
- 7Define a solute ...The substance that dissolves in a liquid to form a solution
- 8Define a solvent ...The liquid in which a solute dissolves
- 9What is the charge of an electron, proton and neutron?Electron = -1
Proton = +1
Neutron = 0 - 10Define soluble ...Describes a substance that will dissolve
- 11What's at the centre of an atom?The nucleus
- 12What is the mass of a proton?1
- 13Define an element ...One type of atom
- 14Define an atom ...A very small particle
- 15Define a mixture ...Two or more elements not chemically joined together
- 16Define insoluble ...Describes a substance that will not dissolve
- 17What is the mass of an electron?1
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2000 - 18What did John Dalton suggest about the atom?- It was a tiny, hard sphere
- The atoms differed in mass
- They could not be split
- They could rearrange and combine themselves with other atoms - 19What did J.J. Thomson discover about the atom?- It had electrons
- It was a negatively charged particle - 20What experiment did Geiger and Marsden carry out?Firing alpha particles (positively charged) at a thin piece of gold
- 21What did Rutherford suggest about the atom?- The positive particles were concentrated in the middle
- The electrons orbit around the nucleus which contains protons - 22What did Niels Bohr suggest about the atom?- Electrons orbit the nucleus at set distances
- There a different shell/energy levels - 23What did James Chadwick discover?The neutron
- 24Who came up with this model?J.J. Thomson
- 25Who came up with this model?Rutherford
- 26Who came up with this model?Niels Bohr
- 27Define a compound ...Two or more elements chemically joined together
Informações
- Descrição
- GCSE Chemistry FlashCards sobre C1, criado por Charlie Solk em 19-05-2021.
- Criado por
- Charlie Solk
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